diff --git a/spiffworkflow-backend/migrations/env.py b/spiffworkflow-backend/migrations/env.py
index 630e381ad..68feded2a 100644
--- a/spiffworkflow-backend/migrations/env.py
+++ b/spiffworkflow-backend/migrations/env.py
@@ -1,3 +1,5 @@
+from __future__ import with_statement
+
 import logging
 from logging.config import fileConfig
 
diff --git a/spiffworkflow-backend/migrations/versions/1e8167de6df8_.py b/spiffworkflow-backend/migrations/versions/1e8167de6df8_.py
deleted file mode 100644
index 18668aed1..000000000
--- a/spiffworkflow-backend/migrations/versions/1e8167de6df8_.py
+++ /dev/null
@@ -1,43 +0,0 @@
-"""empty message
-
-Revision ID: 1e8167de6df8
-Revises: 8930711a75a4
-Create Date: 2023-03-02 15:18:19.515864
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = '1e8167de6df8'
-down_revision = '8930711a75a4'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.create_table('process_instance_file_data',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('process_instance_id', sa.Integer(), nullable=False),
-    sa.Column('identifier', sa.String(length=255), nullable=False),
-    sa.Column('list_index', sa.Integer(), nullable=True),
-    sa.Column('mimetype', sa.String(length=255), nullable=False),
-    sa.Column('filename', sa.String(length=255), nullable=False),
-    sa.Column('contents', sa.LargeBinary(), nullable=False),
-    sa.Column('digest', sa.String(length=64), nullable=False),
-    sa.Column('updated_at_in_seconds', sa.Integer(), nullable=False),
-    sa.Column('created_at_in_seconds', sa.Integer(), nullable=False),
-    sa.ForeignKeyConstraint(['process_instance_id'], ['process_instance.id'], ),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_process_instance_file_data_digest'), 'process_instance_file_data', ['digest'], unique=False)
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_index(op.f('ix_process_instance_file_data_digest'), table_name='process_instance_file_data')
-    op.drop_table('process_instance_file_data')
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/ac6b60d7fee9_.py b/spiffworkflow-backend/migrations/versions/55b76c4528c5_.py
similarity index 73%
rename from spiffworkflow-backend/migrations/versions/ac6b60d7fee9_.py
rename to spiffworkflow-backend/migrations/versions/55b76c4528c5_.py
index 520af3804..efe373eb4 100644
--- a/spiffworkflow-backend/migrations/versions/ac6b60d7fee9_.py
+++ b/spiffworkflow-backend/migrations/versions/55b76c4528c5_.py
@@ -1,8 +1,8 @@
 """empty message
 
-Revision ID: ac6b60d7fee9
+Revision ID: 55b76c4528c5
 Revises: 
-Create Date: 2023-02-27 22:02:11.465980
+Create Date: 2023-03-06 11:11:55.431564
 
 """
 from alembic import op
@@ -10,7 +10,7 @@ import sqlalchemy as sa
 
 
 # revision identifiers, used by Alembic.
-revision = 'ac6b60d7fee9'
+revision = '55b76c4528c5'
 down_revision = None
 branch_labels = None
 depends_on = None
@@ -18,6 +18,29 @@ depends_on = None
 
 def upgrade():
     # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('bpmn_process',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('guid', sa.String(length=36), nullable=True),
+    sa.Column('parent_process_id', sa.Integer(), nullable=True),
+    sa.Column('properties_json', sa.JSON(), nullable=False),
+    sa.Column('json_data_hash', sa.String(length=255), nullable=False),
+    sa.ForeignKeyConstraint(['parent_process_id'], ['bpmn_process.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_bpmn_process_guid'), 'bpmn_process', ['guid'], unique=True)
+    op.create_index(op.f('ix_bpmn_process_json_data_hash'), 'bpmn_process', ['json_data_hash'], unique=False)
+    op.create_table('bpmn_process_definition',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('hash', sa.String(length=255), nullable=False),
+    sa.Column('bpmn_identifier', sa.String(length=255), nullable=False),
+    sa.Column('properties_json', sa.JSON(), nullable=False),
+    sa.Column('type', sa.String(length=32), nullable=True),
+    sa.Column('bpmn_version_control_type', sa.String(length=50), nullable=True),
+    sa.Column('bpmn_version_control_identifier', sa.String(length=255), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_bpmn_process_definition_bpmn_identifier'), 'bpmn_process_definition', ['bpmn_identifier'], unique=False)
+    op.create_index(op.f('ix_bpmn_process_definition_hash'), 'bpmn_process_definition', ['hash'], unique=True)
     op.create_table('correlation_property_cache',
     sa.Column('id', sa.Integer(), nullable=False),
     sa.Column('name', sa.String(length=50), nullable=False),
@@ -32,6 +55,13 @@ def upgrade():
     sa.Column('identifier', sa.String(length=255), nullable=True),
     sa.PrimaryKeyConstraint('id')
     )
+    op.create_table('json_data',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('hash', sa.String(length=255), nullable=False),
+    sa.Column('data', sa.JSON(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_json_data_hash'), 'json_data', ['hash'], unique=True)
     op.create_table('message_triggerable_process_model',
     sa.Column('id', sa.Integer(), nullable=False),
     sa.Column('message_name', sa.String(length=255), nullable=True),
@@ -68,6 +98,7 @@ def upgrade():
     sa.Column('id', sa.Integer(), nullable=False),
     sa.Column('process_instance_id', sa.Integer(), nullable=False),
     sa.Column('bpmn_process_identifier', sa.String(length=255), nullable=False),
+    sa.Column('bpmn_process_name', sa.String(length=255), nullable=True),
     sa.Column('bpmn_task_identifier', sa.String(length=255), nullable=False),
     sa.Column('bpmn_task_name', sa.String(length=255), nullable=True),
     sa.Column('bpmn_task_type', sa.String(length=255), nullable=True),
@@ -94,6 +125,15 @@ def upgrade():
     sa.UniqueConstraint('service', 'service_id', name='service_key'),
     sa.UniqueConstraint('username')
     )
+    op.create_table('bpmn_process_definition_relationship',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('bpmn_process_definition_parent_id', sa.Integer(), nullable=False),
+    sa.Column('bpmn_process_definition_child_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['bpmn_process_definition_child_id'], ['bpmn_process_definition.id'], ),
+    sa.ForeignKeyConstraint(['bpmn_process_definition_parent_id'], ['bpmn_process_definition.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('bpmn_process_definition_parent_id', 'bpmn_process_definition_child_id', name='bpmn_process_definition_relationship_unique')
+    )
     op.create_table('principal',
     sa.Column('id', sa.Integer(), nullable=False),
     sa.Column('user_id', sa.Integer(), nullable=True),
@@ -110,6 +150,9 @@ def upgrade():
     sa.Column('process_model_identifier', sa.String(length=255), nullable=False),
     sa.Column('process_model_display_name', sa.String(length=255), nullable=False),
     sa.Column('process_initiator_id', sa.Integer(), nullable=False),
+    sa.Column('bpmn_process_definition_id', sa.Integer(), nullable=True),
+    sa.Column('bpmn_process_id', sa.Integer(), nullable=True),
+    sa.Column('spiff_serializer_version', sa.String(length=50), nullable=True),
     sa.Column('bpmn_json', sa.JSON(), nullable=True),
     sa.Column('start_in_seconds', sa.Integer(), nullable=True),
     sa.Column('end_in_seconds', sa.Integer(), nullable=True),
@@ -121,6 +164,8 @@ def upgrade():
     sa.Column('spiff_step', sa.Integer(), nullable=True),
     sa.Column('locked_by', sa.String(length=80), nullable=True),
     sa.Column('locked_at_in_seconds', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['bpmn_process_definition_id'], ['bpmn_process_definition.id'], ),
+    sa.ForeignKeyConstraint(['bpmn_process_id'], ['bpmn_process.id'], ),
     sa.ForeignKeyConstraint(['process_initiator_id'], ['user.id'], ),
     sa.PrimaryKeyConstraint('id')
     )
@@ -158,6 +203,29 @@ def upgrade():
     sa.PrimaryKeyConstraint('id'),
     sa.UniqueConstraint('key')
     )
+    op.create_table('task',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('guid', sa.String(length=36), nullable=False),
+    sa.Column('bpmn_process_id', sa.Integer(), nullable=False),
+    sa.Column('state', sa.String(length=10), nullable=False),
+    sa.Column('properties_json', sa.JSON(), nullable=False),
+    sa.Column('json_data_hash', sa.String(length=255), nullable=False),
+    sa.ForeignKeyConstraint(['bpmn_process_id'], ['bpmn_process.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_task_guid'), 'task', ['guid'], unique=True)
+    op.create_index(op.f('ix_task_json_data_hash'), 'task', ['json_data_hash'], unique=False)
+    op.create_table('task_definition',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('bpmn_process_definition_id', sa.Integer(), nullable=False),
+    sa.Column('bpmn_identifier', sa.String(length=255), nullable=False),
+    sa.Column('properties_json', sa.JSON(), nullable=False),
+    sa.Column('typename', sa.String(length=255), nullable=False),
+    sa.ForeignKeyConstraint(['bpmn_process_definition_id'], ['bpmn_process_definition.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('bpmn_process_definition_id', 'bpmn_identifier', name='task_definition_unique')
+    )
+    op.create_index(op.f('ix_task_definition_bpmn_identifier'), 'task_definition', ['bpmn_identifier'], unique=False)
     op.create_table('user_group_assignment',
     sa.Column('id', sa.Integer(), nullable=False),
     sa.Column('user_id', sa.Integer(), nullable=False),
@@ -228,6 +296,21 @@ def upgrade():
     sa.PrimaryKeyConstraint('id'),
     sa.UniqueConstraint('principal_id', 'permission_target_id', 'permission', name='permission_assignment_uniq')
     )
+    op.create_table('process_instance_file_data',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('process_instance_id', sa.Integer(), nullable=False),
+    sa.Column('identifier', sa.String(length=255), nullable=False),
+    sa.Column('list_index', sa.Integer(), nullable=True),
+    sa.Column('mimetype', sa.String(length=255), nullable=False),
+    sa.Column('filename', sa.String(length=255), nullable=False),
+    sa.Column('contents', sa.LargeBinary(), nullable=False),
+    sa.Column('digest', sa.String(length=64), nullable=False),
+    sa.Column('updated_at_in_seconds', sa.Integer(), nullable=False),
+    sa.Column('created_at_in_seconds', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['process_instance_id'], ['process_instance.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_process_instance_file_data_digest'), 'process_instance_file_data', ['digest'], unique=False)
     op.create_table('process_instance_metadata',
     sa.Column('id', sa.Integer(), nullable=False),
     sa.Column('process_instance_id', sa.Integer(), nullable=False),
@@ -248,6 +331,7 @@ def upgrade():
     sa.Column('task_id', sa.String(length=50), nullable=False),
     sa.Column('task_state', sa.String(length=50), nullable=False),
     sa.Column('bpmn_task_identifier', sa.String(length=255), nullable=False),
+    sa.Column('delta_json', sa.JSON(), nullable=True),
     sa.Column('start_in_seconds', sa.DECIMAL(precision=17, scale=6), nullable=False),
     sa.Column('end_in_seconds', sa.DECIMAL(precision=17, scale=6), nullable=True),
     sa.ForeignKeyConstraint(['process_instance_id'], ['process_instance.id'], ),
@@ -290,12 +374,19 @@ def downgrade():
     op.drop_table('spiff_step_details')
     op.drop_index(op.f('ix_process_instance_metadata_key'), table_name='process_instance_metadata')
     op.drop_table('process_instance_metadata')
+    op.drop_index(op.f('ix_process_instance_file_data_digest'), table_name='process_instance_file_data')
+    op.drop_table('process_instance_file_data')
     op.drop_table('permission_assignment')
     op.drop_table('message_instance')
     op.drop_index(op.f('ix_human_task_completed'), table_name='human_task')
     op.drop_table('human_task')
     op.drop_table('user_group_assignment_waiting')
     op.drop_table('user_group_assignment')
+    op.drop_index(op.f('ix_task_definition_bpmn_identifier'), table_name='task_definition')
+    op.drop_table('task_definition')
+    op.drop_index(op.f('ix_task_json_data_hash'), table_name='task')
+    op.drop_index(op.f('ix_task_guid'), table_name='task')
+    op.drop_table('task')
     op.drop_table('secret')
     op.drop_table('refresh_token')
     op.drop_index(op.f('ix_process_instance_report_identifier'), table_name='process_instance_report')
@@ -305,6 +396,7 @@ def downgrade():
     op.drop_index(op.f('ix_process_instance_process_model_display_name'), table_name='process_instance')
     op.drop_table('process_instance')
     op.drop_table('principal')
+    op.drop_table('bpmn_process_definition_relationship')
     op.drop_table('user')
     op.drop_table('spiff_logging')
     op.drop_index(op.f('ix_spec_reference_cache_type'), table_name='spec_reference_cache')
@@ -314,6 +406,14 @@ def downgrade():
     op.drop_table('permission_target')
     op.drop_index(op.f('ix_message_triggerable_process_model_process_model_identifier'), table_name='message_triggerable_process_model')
     op.drop_table('message_triggerable_process_model')
+    op.drop_index(op.f('ix_json_data_hash'), table_name='json_data')
+    op.drop_table('json_data')
     op.drop_table('group')
     op.drop_table('correlation_property_cache')
+    op.drop_index(op.f('ix_bpmn_process_definition_hash'), table_name='bpmn_process_definition')
+    op.drop_index(op.f('ix_bpmn_process_definition_bpmn_identifier'), table_name='bpmn_process_definition')
+    op.drop_table('bpmn_process_definition')
+    op.drop_index(op.f('ix_bpmn_process_json_data_hash'), table_name='bpmn_process')
+    op.drop_index(op.f('ix_bpmn_process_guid'), table_name='bpmn_process')
+    op.drop_table('bpmn_process')
     # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/61cd3e8462f5_.py b/spiffworkflow-backend/migrations/versions/61cd3e8462f5_.py
deleted file mode 100644
index c6a5f000e..000000000
--- a/spiffworkflow-backend/migrations/versions/61cd3e8462f5_.py
+++ /dev/null
@@ -1,30 +0,0 @@
-"""empty message
-
-Revision ID: 61cd3e8462f5
-Revises: 941f7b76d278
-Create Date: 2023-03-03 16:22:12.449757
-
-"""
-from alembic import op
-import sqlalchemy as sa
-from sqlalchemy.dialects import mysql
-
-# revision identifiers, used by Alembic.
-revision = '61cd3e8462f5'
-down_revision = '941f7b76d278'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_constraint('task_ibfk_2', 'task', type_='foreignkey')
-    op.drop_column('task', 'task_definition_id')
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('task', sa.Column('task_definition_id', mysql.INTEGER(), autoincrement=False, nullable=False))
-    op.create_foreign_key('task_ibfk_2', 'task', 'task_definition', ['task_definition_id'], ['id'])
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/7422be14adc4_.py b/spiffworkflow-backend/migrations/versions/7422be14adc4_.py
deleted file mode 100644
index 6897e0f21..000000000
--- a/spiffworkflow-backend/migrations/versions/7422be14adc4_.py
+++ /dev/null
@@ -1,51 +0,0 @@
-"""empty message
-
-Revision ID: 7422be14adc4
-Revises: ac6b60d7fee9
-Create Date: 2023-03-01 15:39:25.731722
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = '7422be14adc4'
-down_revision = 'ac6b60d7fee9'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.create_table('process_instance_data',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('runtime_json', sa.JSON(), nullable=False),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_table('serialized_bpmn_definition',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('hash', sa.String(length=255), nullable=False),
-    sa.Column('static_json', sa.JSON(), nullable=False),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_serialized_bpmn_definition_hash'), 'serialized_bpmn_definition', ['hash'], unique=True)
-    op.add_column('process_instance', sa.Column('serialized_bpmn_definition_id', sa.Integer(), nullable=True))
-    op.add_column('process_instance', sa.Column('process_instance_data_id', sa.Integer(), nullable=True))
-    op.create_foreign_key(None, 'process_instance', 'process_instance_data', ['process_instance_data_id'], ['id'])
-    op.create_foreign_key(None, 'process_instance', 'serialized_bpmn_definition', ['serialized_bpmn_definition_id'], ['id'])
-    op.add_column('spiff_step_details', sa.Column('delta_json', sa.JSON(), nullable=True))
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_column('spiff_step_details', 'delta_json')
-    op.drop_constraint('process_instance_ibfk_3', 'process_instance', type_='foreignkey')
-    op.drop_constraint('process_instance_ibfk_2', 'process_instance', type_='foreignkey')
-    op.drop_column('process_instance', 'process_instance_data_id')
-    op.drop_column('process_instance', 'serialized_bpmn_definition_id')
-    op.drop_index(op.f('ix_serialized_bpmn_definition_hash'), table_name='serialized_bpmn_definition')
-    op.drop_table('serialized_bpmn_definition')
-    op.drop_table('process_instance_data')
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/8930711a75a4_.py b/spiffworkflow-backend/migrations/versions/8930711a75a4_.py
deleted file mode 100644
index 9947a6644..000000000
--- a/spiffworkflow-backend/migrations/versions/8930711a75a4_.py
+++ /dev/null
@@ -1,28 +0,0 @@
-"""empty message
-
-Revision ID: 8930711a75a4
-Revises: 7422be14adc4
-Create Date: 2023-03-01 16:16:50.446929
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = '8930711a75a4'
-down_revision = '7422be14adc4'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('spiff_logging', sa.Column('bpmn_process_name', sa.String(length=255), nullable=True))
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_column('spiff_logging', 'bpmn_process_name')
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/941f7b76d278_.py b/spiffworkflow-backend/migrations/versions/941f7b76d278_.py
deleted file mode 100644
index 8705894a8..000000000
--- a/spiffworkflow-backend/migrations/versions/941f7b76d278_.py
+++ /dev/null
@@ -1,30 +0,0 @@
-"""empty message
-
-Revision ID: 941f7b76d278
-Revises: b0b82fab4cf9
-Create Date: 2023-03-03 14:40:46.574985
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = '941f7b76d278'
-down_revision = 'b0b82fab4cf9'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('bpmn_process', sa.Column('guid', sa.String(length=36), nullable=True))
-    op.create_index(op.f('ix_bpmn_process_guid'), 'bpmn_process', ['guid'], unique=True)
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_index(op.f('ix_bpmn_process_guid'), table_name='bpmn_process')
-    op.drop_column('bpmn_process', 'guid')
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/a63a61a21398_.py b/spiffworkflow-backend/migrations/versions/a63a61a21398_.py
deleted file mode 100644
index 2a4524b15..000000000
--- a/spiffworkflow-backend/migrations/versions/a63a61a21398_.py
+++ /dev/null
@@ -1,107 +0,0 @@
-"""empty message
-
-Revision ID: a63a61a21398
-Revises: 1e8167de6df8
-Create Date: 2023-03-03 13:07:51.665585
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = 'a63a61a21398'
-down_revision = '1e8167de6df8'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.create_table('bpmn_process',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('parent_process_id', sa.Integer(), nullable=True),
-    sa.Column('properties_json', sa.JSON(), nullable=False),
-    sa.Column('json_data_hash', sa.String(length=255), nullable=False),
-    sa.ForeignKeyConstraint(['parent_process_id'], ['bpmn_process.id'], ),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_bpmn_process_json_data_hash'), 'bpmn_process', ['json_data_hash'], unique=False)
-    op.create_table('bpmn_process_definition',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('hash', sa.String(length=255), nullable=False),
-    sa.Column('bpmn_identifier', sa.String(length=255), nullable=False),
-    sa.Column('properties_json', sa.JSON(), nullable=False),
-    sa.Column('type', sa.String(length=32), nullable=True),
-    sa.Column('bpmn_version_control_type', sa.String(length=50), nullable=True),
-    sa.Column('bpmn_version_control_identifier', sa.String(length=255), nullable=True),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_bpmn_process_definition_bpmn_identifier'), 'bpmn_process_definition', ['bpmn_identifier'], unique=False)
-    op.create_index(op.f('ix_bpmn_process_definition_hash'), 'bpmn_process_definition', ['hash'], unique=True)
-    op.create_table('json_data',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('hash', sa.String(length=255), nullable=False),
-    sa.Column('data', sa.JSON(), nullable=False),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_json_data_hash'), 'json_data', ['hash'], unique=True)
-    op.create_table('bpmn_process_definition_relationship',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('bpmn_process_definition_parent_id', sa.Integer(), nullable=False),
-    sa.Column('bpmn_process_definition_child_id', sa.Integer(), nullable=False),
-    sa.ForeignKeyConstraint(['bpmn_process_definition_child_id'], ['bpmn_process_definition.id'], ),
-    sa.ForeignKeyConstraint(['bpmn_process_definition_parent_id'], ['bpmn_process_definition.id'], ),
-    sa.PrimaryKeyConstraint('id'),
-    sa.UniqueConstraint('bpmn_process_definition_parent_id', 'bpmn_process_definition_child_id', name='bpmn_process_definition_relationship_unique')
-    )
-    op.create_table('task_definition',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('bpmn_process_definition_id', sa.Integer(), nullable=False),
-    sa.Column('bpmn_identifier', sa.String(length=255), nullable=False),
-    sa.Column('properties_json', sa.JSON(), nullable=False),
-    sa.Column('typename', sa.String(length=255), nullable=False),
-    sa.ForeignKeyConstraint(['bpmn_process_definition_id'], ['bpmn_process_definition.id'], ),
-    sa.PrimaryKeyConstraint('id'),
-    sa.UniqueConstraint('bpmn_process_definition_id', 'bpmn_identifier', name='task_definition_unique')
-    )
-    op.create_index(op.f('ix_task_definition_bpmn_identifier'), 'task_definition', ['bpmn_identifier'], unique=False)
-    op.create_table('task',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('guid', sa.String(length=36), nullable=False),
-    sa.Column('bpmn_process_id', sa.Integer(), nullable=False),
-    sa.Column('task_definition_id', sa.Integer(), nullable=False),
-    sa.Column('state', sa.String(length=10), nullable=False),
-    sa.Column('properties_json', sa.JSON(), nullable=False),
-    sa.Column('json_data_hash', sa.String(length=255), nullable=False),
-    sa.ForeignKeyConstraint(['bpmn_process_id'], ['bpmn_process.id'], ),
-    sa.ForeignKeyConstraint(['task_definition_id'], ['task_definition.id'], ),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_index(op.f('ix_task_guid'), 'task', ['guid'], unique=True)
-    op.create_index(op.f('ix_task_json_data_hash'), 'task', ['json_data_hash'], unique=False)
-    op.add_column('process_instance', sa.Column('bpmn_process_definition_id', sa.Integer(), nullable=True))
-    op.add_column('process_instance', sa.Column('spiff_serializer_version', sa.String(length=50), nullable=True))
-    op.create_foreign_key(None, 'process_instance', 'bpmn_process_definition', ['bpmn_process_definition_id'], ['id'])
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_constraint(None, 'process_instance', type_='foreignkey')
-    op.drop_column('process_instance', 'spiff_serializer_version')
-    op.drop_column('process_instance', 'bpmn_process_definition_id')
-    op.drop_index(op.f('ix_task_json_data_hash'), table_name='task')
-    op.drop_index(op.f('ix_task_guid'), table_name='task')
-    op.drop_table('task')
-    op.drop_index(op.f('ix_task_definition_bpmn_identifier'), table_name='task_definition')
-    op.drop_table('task_definition')
-    op.drop_table('bpmn_process_definition_relationship')
-    op.drop_index(op.f('ix_json_data_hash'), table_name='json_data')
-    op.drop_table('json_data')
-    op.drop_index(op.f('ix_bpmn_process_definition_hash'), table_name='bpmn_process_definition')
-    op.drop_index(op.f('ix_bpmn_process_definition_bpmn_identifier'), table_name='bpmn_process_definition')
-    op.drop_table('bpmn_process_definition')
-    op.drop_index(op.f('ix_bpmn_process_json_data_hash'), table_name='bpmn_process')
-    op.drop_table('bpmn_process')
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/migrations/versions/b0b82fab4cf9_.py b/spiffworkflow-backend/migrations/versions/b0b82fab4cf9_.py
deleted file mode 100644
index 61d199450..000000000
--- a/spiffworkflow-backend/migrations/versions/b0b82fab4cf9_.py
+++ /dev/null
@@ -1,30 +0,0 @@
-"""empty message
-
-Revision ID: b0b82fab4cf9
-Revises: a63a61a21398
-Create Date: 2023-03-03 13:24:08.304492
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = 'b0b82fab4cf9'
-down_revision = 'a63a61a21398'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('process_instance', sa.Column('bpmn_process_id', sa.Integer(), nullable=True))
-    op.create_foreign_key(None, 'process_instance', 'bpmn_process', ['bpmn_process_id'], ['id'])
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_constraint(None, 'process_instance', type_='foreignkey')
-    op.drop_column('process_instance', 'bpmn_process_id')
-    # ### end Alembic commands ###
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/load_database_models.py b/spiffworkflow-backend/src/spiffworkflow_backend/load_database_models.py
index d51abb494..376083cf2 100644
--- a/spiffworkflow-backend/src/spiffworkflow_backend/load_database_models.py
+++ b/spiffworkflow-backend/src/spiffworkflow_backend/load_database_models.py
@@ -50,12 +50,6 @@ from spiffworkflow_backend.models.group import GroupModel  # noqa: F401
 from spiffworkflow_backend.models.process_instance_metadata import (
     ProcessInstanceMetadataModel,
 )  # noqa: F401
-from spiffworkflow_backend.models.serialized_bpmn_definition import (
-    SerializedBpmnDefinitionModel,
-)  # noqa: F401
-from spiffworkflow_backend.models.process_instance_data import (
-    ProcessInstanceDataModel,
-)  # noqa: F401
 from spiffworkflow_backend.models.process_instance_file_data import (
     ProcessInstanceFileDataModel,
 )  # noqa: F401
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance.py b/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance.py
index 5b3733710..ea7f45623 100644
--- a/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance.py
+++ b/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance.py
@@ -22,10 +22,6 @@ from spiffworkflow_backend.models.bpmn_process_definition import (
 )
 from spiffworkflow_backend.models.db import db
 from spiffworkflow_backend.models.db import SpiffworkflowBaseDBModel
-from spiffworkflow_backend.models.process_instance_data import ProcessInstanceDataModel
-from spiffworkflow_backend.models.serialized_bpmn_definition import (
-    SerializedBpmnDefinitionModel,
-)  # noqa: F401
 from spiffworkflow_backend.models.task import Task
 from spiffworkflow_backend.models.task import TaskSchema
 from spiffworkflow_backend.models.user import UserModel
@@ -69,16 +65,6 @@ class ProcessInstanceModel(SpiffworkflowBaseDBModel):
     process_initiator_id: int = db.Column(ForeignKey(UserModel.id), nullable=False)  # type: ignore
     process_initiator = relationship("UserModel")
 
-    serialized_bpmn_definition_id: int | None = db.Column(
-        ForeignKey(SerializedBpmnDefinitionModel.id), nullable=True  # type: ignore
-    )
-    serialized_bpmn_definition = relationship("SerializedBpmnDefinitionModel")
-
-    process_instance_data_id: int | None = db.Column(
-        ForeignKey(ProcessInstanceDataModel.id), nullable=True  # type: ignore
-    )
-    process_instance_data = relationship("ProcessInstanceDataModel", cascade="delete")
-
     bpmn_process_definition_id: Optional[int] = db.Column(
         ForeignKey(BpmnProcessDefinitionModel.id), nullable=True  # type: ignore
     )
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance_data.py b/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance_data.py
deleted file mode 100644
index 01f07e33c..000000000
--- a/spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance_data.py
+++ /dev/null
@@ -1,22 +0,0 @@
-"""Process_instance."""
-from __future__ import annotations
-
-from spiffworkflow_backend.models.db import db
-from spiffworkflow_backend.models.db import SpiffworkflowBaseDBModel
-
-
-# the last three here should maybe become columns on process instance someday
-# runtime_json
-#   "bpmn_messages",
-#   "correlations",
-#   "data",
-#   "subprocesses",
-#   "tasks",
-#   "last_task", # guid generated by spiff
-#   "root", # guid generated by spiff
-#   "success", # boolean
-class ProcessInstanceDataModel(SpiffworkflowBaseDBModel):
-    __tablename__ = "process_instance_data"
-    id: int = db.Column(db.Integer, primary_key=True)
-    # this is not deferred because there is no reason to query this model if you do not want the runtime_json
-    runtime_json: str = db.Column(db.JSON, nullable=False)
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/models/serialized_bpmn_definition.py b/spiffworkflow-backend/src/spiffworkflow_backend/models/serialized_bpmn_definition.py
deleted file mode 100644
index 5ccb71466..000000000
--- a/spiffworkflow-backend/src/spiffworkflow_backend/models/serialized_bpmn_definition.py
+++ /dev/null
@@ -1,49 +0,0 @@
-"""Process_instance."""
-from __future__ import annotations
-
-from spiffworkflow_backend.models.db import db
-from spiffworkflow_backend.models.db import SpiffworkflowBaseDBModel
-
-
-# top level serialized keys
-#
-# static
-#   "subprocess_specs",
-#   "spec",
-#   "serializer_version",
-#
-# runtime
-#   "bpmn_messages",
-#   "correlations",
-#   "subprocesses",
-#
-#   also in subprocesses
-#   "data",
-#   "tasks"
-#   "last_task", # guid generated by spiff
-#   "root", # guid generated by spiff
-#   "success", # boolean
-#
-# new columns on process_instance
-#
-# delta algorithm:
-#   a = {"hey": { "hey2": 2, "hey3": 3, "hey6": 7 }, "hey30": 3, "hey40": 4}
-#   b = {"hey": { "hey2": 4, "hey5": 3 }, "hey20": 2, "hey30": 3}
-#   a_keys = set(a.keys())
-#   b_keys = set(b.keys())
-#   removed = a_keys - b_keys
-#   added_keys = b_keys - a_keys
-#   keys_present_in_both = a_keys & b_keys
-#   changed = {}
-#   for key_in_both in keys_present_in_both:
-#       if a[key_in_both] != b[key_in_both]:
-#           changed[key_in_both] = b[key_in_both]
-#   added = {}
-#   for added_key in added_keys:
-#       added[added_key] = b[added_key]
-#   final_tuple = [added, removed, changed]
-class SerializedBpmnDefinitionModel(SpiffworkflowBaseDBModel):
-    __tablename__ = "serialized_bpmn_definition"
-    id: int = db.Column(db.Integer, primary_key=True)
-    hash: str = db.Column(db.String(255), nullable=False, index=True, unique=True)
-    static_json: str = db.Column(db.JSON, nullable=False)
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/services/process_instance_processor.py b/spiffworkflow-backend/src/spiffworkflow_backend/services/process_instance_processor.py
index 6b41b44a7..f58cf3034 100644
--- a/spiffworkflow-backend/src/spiffworkflow_backend/services/process_instance_processor.py
+++ b/spiffworkflow-backend/src/spiffworkflow_backend/services/process_instance_processor.py
@@ -77,7 +77,6 @@ from spiffworkflow_backend.models.message_instance_correlation import (
 )
 from spiffworkflow_backend.models.process_instance import ProcessInstanceModel
 from spiffworkflow_backend.models.process_instance import ProcessInstanceStatus
-from spiffworkflow_backend.models.process_instance_data import ProcessInstanceDataModel
 from spiffworkflow_backend.models.process_instance_metadata import (
     ProcessInstanceMetadataModel,
 )
@@ -85,9 +84,6 @@ from spiffworkflow_backend.models.process_model import ProcessModelInfo
 from spiffworkflow_backend.models.script_attributes_context import (
     ScriptAttributesContext,
 )
-from spiffworkflow_backend.models.serialized_bpmn_definition import (
-    SerializedBpmnDefinitionModel,
-)  # noqa: F401
 from spiffworkflow_backend.models.spec_reference import SpecReferenceCache
 from spiffworkflow_backend.models.spiff_step_details import SpiffStepDetailsModel
 from spiffworkflow_backend.models.task_definition import TaskDefinitionModel
@@ -928,53 +924,6 @@ class ProcessInstanceProcessor:
                 )
         return subprocesses_by_child_task_ids
 
-    def _add_bpmn_json_records(self) -> None:
-        """Adds serialized_bpmn_definition and process_instance_data records to the db session.
-
-        Expects the save method to commit it.
-        """
-        bpmn_dict = json.loads(self.serialize())
-        bpmn_dict_keys = ("spec", "subprocess_specs", "serializer_version")
-        bpmn_spec_dict = {}
-        process_instance_data_dict = {}
-        for bpmn_key in bpmn_dict.keys():
-            if bpmn_key in bpmn_dict_keys:
-                bpmn_spec_dict[bpmn_key] = bpmn_dict[bpmn_key]
-            else:
-                process_instance_data_dict[bpmn_key] = bpmn_dict[bpmn_key]
-
-        # FIXME: always save new hash until we get updated Spiff without loopresettask
-        # if self.process_instance_model.serialized_bpmn_definition_id is None:
-        new_hash_digest = sha256(
-            json.dumps(bpmn_spec_dict, sort_keys=True).encode("utf8")
-        ).hexdigest()
-        serialized_bpmn_definition = SerializedBpmnDefinitionModel.query.filter_by(
-            hash=new_hash_digest
-        ).first()
-        if serialized_bpmn_definition is None:
-            serialized_bpmn_definition = SerializedBpmnDefinitionModel(
-                hash=new_hash_digest, static_json=json.dumps(bpmn_spec_dict)
-            )
-            db.session.add(serialized_bpmn_definition)
-        if (
-            self.process_instance_model.serialized_bpmn_definition_id is None
-            or self.process_instance_model.serialized_bpmn_definition.hash
-            != new_hash_digest
-        ):
-            self.process_instance_model.serialized_bpmn_definition = (
-                serialized_bpmn_definition
-            )
-
-        process_instance_data = None
-        if self.process_instance_model.process_instance_data_id is None:
-            process_instance_data = ProcessInstanceDataModel()
-        else:
-            process_instance_data = self.process_instance_model.process_instance_data
-
-        process_instance_data.runtime_json = json.dumps(process_instance_data_dict)
-        db.session.add(process_instance_data)
-        self.process_instance_model.process_instance_data = process_instance_data
-
     def _store_bpmn_process_definition(
         self,
         process_bpmn_properties: dict,
@@ -1090,7 +1039,7 @@ class ProcessInstanceProcessor:
 
         return bpmn_process
 
-    def _add_bpmn_json_records_new(self) -> None:
+    def _add_bpmn_json_records(self) -> None:
         """Adds serialized_bpmn_definition and process_instance_data records to the db session.
 
         Expects the save method to commit it.
@@ -1117,8 +1066,7 @@ class ProcessInstanceProcessor:
 
     def save(self) -> None:
         """Saves the current state of this processor to the database."""
-        # self._add_bpmn_json_records()
-        self._add_bpmn_json_records_new()
+        self._add_bpmn_json_records()
         self.process_instance_model.spiff_serializer_version = self.SERIALIZER_VERSION
 
         complete_states = [TaskState.CANCELLED, TaskState.COMPLETED]