I have my sketchup model inserted into Layout, when I copy and pasted the layout it paste in but the size is then bigger and it losses reference as can be seen in the "Sketchup Model dialogue box …it is not linked anymore…
the attached images show the before pasting and after…the after shows that it has lost reference .
update .
So the issue seems to have happened because the sketchup model was started in 2024 version and then worked on 2025 version…now layout is not happy.
Layout 2025 will works perfectly ok when inserting a different model…so the Layout is function ok. It’s just the model that has been worked in 2024 & 2025.
Issue solved!
I opened the model in 2025 purged it, inserted into Layout 2025 …and all good.
I remembered something. It’s only unused environments that lead to the problem. You can purge those in the Environments panel. That will fix the issue without you having to purge other items that you might be using later.