How to not remove Layout Diagram pbip project

Hi jaryszek, 
Thank you for the follow-up question.

Yes, the report built on top of the newly created semantic model will see the data changes, as long as the semantic model itself is refreshed or reading updated data (for example via DirectLake/OneLake). From a data perspective, everything works as expected.

What changes is only the model identity, not the data behavior. When you create or deploy a new semantic model, reports connected to that model will reflect the latest data, but Power BI treats it as a new model instance. Because of that, editor-specific elements like the model diagram layout don’t carry over, even though the report visuals continue to work normally.

Thanks again for using the Microsoft Fabric Community Forum.