The relationship_derived_virtual_props test create two new properties: managerManager on users, and membersManager on roles. These fields are then populated via the queryConfig-defined virtual property population mechanism. These virtual properties are persisted. This persistence fails because these fields are not defined in the explicit table definitions (managed user for jdbc, managed user and role for ds). Thus the exclude_from_explicit_table tag was added to this test suite. It would be great if a means were made to more easily modify the explicit table definitions - jdbc would likely be much more straightforward than ds.