Builder pro problem

It did for me in 2020.0 but not anymore since the 2020.1

Why not save your SU drawing down to an earlier version, like 2018…I keep ALL versions of SU just for stuff like this. Couldn’t you open PB from the saved_down SU FILE?

You can get several older versions of SU at
Download SketchUp | Free Trial of 3D Modeling Software all

I do this with my rendering software and it works perfectly. Haven’t updated the renderer, just down-dated the SU file.
P
I did discover that when opening the saved_down file make sure you open the older version of SU first then open the file from the SU FILE MENU; not by double clicking on the file from File Explorer. Otherwise you’ll just end up with the original version you started with.

FYI the save_down operation is only in SU Pro, maybe other SU versions as well. For sure not in Free