Are you trying to Copy-Paste stuff to the Layout?
That is not the proper working method.
What you should do is:
1. While in the Floor Plan Viewpoint, save a View.
2. Display the Layout, then drag-and-drop the saved View onto the Layout. A Drawing will be created on the Layout, and the saved View will be the source of that Drawing.
Alternately, you can just right-click in the Floor Plan Viewpoint, and select the "Save View and Place on Layout" command of the context menu, which will also do the above two steps.
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