Quote - Why is that so diffficult? Note the window size of the old file. Import the pz3. Reset the new window size to the previous one.

Am I missing something?

You aren't missing anything - It's just that I thought that loading a file might be as simple as going File/Load - choosing file, and that's it...

Starting P6/7 (2 minutes), loading that file (1 minute), jotting down the expected dimensions, quitting everything, loading P8, loading the scene in P8, changing the render dimensions in hope to find again my old framing - all this won't speed up my work, for sure...  :-(