Problems with adoption Layout 2016 files in LO 2021

faust07

Problems with the adoption of SketchUp 2016 layout files in SketchUp 2021:

Opening a LO 2016 file in LO 2021 with the link to the old SU 2016 model works.
Opening the SU 2016 model in SU 2021 and saving it as an SU 2021 model with unchanged scenes (is no problem).
Linking the LO 2021 file with the new SU 2021 model leads to the following errors: The model display windows are assigned completely incorrect scenes.
This means that you must manually reassign every corresponding scene individually.
What am I doing wrong?
Thanks in advance for help.

Dave R

It would be helpful to see the LayOut file. Did you make changes in the file back in 2016 that resulted in the scenes being shown as modified? If you open the 2016 version of the file in 2021, does the Camera section or other sections of the SketchUp Model panel show with a dark gray background?

faust07

It would be helpful to see the LayOut file.:
Unfortunately the model has 130 MB and the LO file 250 MB ...
With smaller layout files, the manual reassignment of the scenes to the viewports is also easier than with files with 60 viewports.

Did you make changes in the file back in 2016 that resulted in the scenes being shown as modified?:
No, Scenes are not shown as changed when opening the 2016 model.

If you open the 2016 version of the file in 2021, does the Camera section or other sections of the SketchUp Model panel show with a dark gray background?:
Yes, on some pages the Camera, Effects and Style sections are shown with a gray background, but the assigned scene is correct.
By clicking the "Back" button, I can cancel the deposit.

As I said, with the model from 2016, Layout 2021 works flawlessly.
I converted this model from 2016 into a 2021 model with my new SU2021 one-to-one.
The converted model from SU2021 does not work in Layout 2021.
The model scenes are apparently randomly assigned to the layout windows.

faust07

Since my problem seems to be an isolated case, I decided to manually reassign the scenes to the paper windows correctly.
Fortunately, all of the other layout settings such as scale, styles, etc. were still there.
Nevertheless, thanks for the hints.