Sage 100 Premium migration failed...'KPRIMARY_SY_System' is already in the database.

Test conversion from 5.40.3 to 7.0.1 Sage 100 Premium with multiple integrations. 5.40 instance and 7.0 instance are on same SQL server.  This is the 2nd test migration, so MAS_XXX and MAS_SYSTEM databases currently exist in the new SQL instance. During migration test, after the copy is complete and during the post migration merge phase, receive the following:

Prepare failed with the following error: The following conversion record failed while converting SYS:\06.00.00.01:DATA:SY_SYSTEM:000000:000 - 42S01:MICROSOFT SQL SERVER NATIVE CLIENT 11.0 SQL SERVER. There is already an object named 'KPRIMARY_SY_System' in the database.

Notes: Change tracking is disabled and so is Replication. Tried renaming the index with same error results.

Thank you
Robert