As far as I know you can only save the 3D model directly as a Sketchup file.
The only other solution I can think of is to save the plan as a DXF (or some other format) that hopefully Sketchup can import (sorry not that familiar with Sketchup).
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11