Does Oracle allow the modification of the OOTB custom prints in Unifier Accelerator?

Hello,

In the Unifier Accelerator guide it mentions making changes to BP designs when necessary and warns that removing a data element can affect external data models. So in the event a design is changed and we want to update the data model, is that possible or is the only approach to create a new data model using the updated BP XML? I assume it's the latter, but just wanted to check in case I am missing something.

Note: in Primavera Cloud hosted OAP environments only the owner of a custom print/report can make edits to the existing data model.