Can Logical Model Changes be Sync'd to a Physical Model after a Roll Up Transformation?

 Can Logical Model Changes be Sync'd with Model Source to a Physical Model after a Roll Up Transformation?

Answer: Not by design. Once a roll-up transformation is performed on a physical table, the underyling tables (sub-categories on the logical side) no longer exist in the physical model. Consequently logical model side changes cannot be sync'd to these tables. 

If a synchronization with a logical model is needed, we recommend removing the table that the roll up transformation was run on from the physical model. Then re-sync with the logical model and perform the transformation again. 

For more information on Model Sources and Synchronization, see: 

https://erwin.com/bookshelf/public_html/2020R1/Content/User%20Guides/erwin%20Help/How_to_Synchronize_Models.html

For more information on the Roll Up Transformation, see:

https://erwin.com/bookshelf/public_html/2020R1/Content/User%20Guides/erwin%20Help/use_a_transformation_to_roll_up_a_subtype_relationship.html