This morning I had the file open and it looked great. I save it multiple times a day, every day. Now, after lunch, all I can find is a version of the file from April 18th, 3 weeks ago.
Where did this version even come from? I switch between files multiple times a day, and I always save when it asks, in addition to saving after a workflow session.
The only thing that I can recall is using Layout and inserting a reference to the file. Is there a known bug in Layout that would change the SU file like that?
There is no known bug that reverts, moves, or erases files on your HD. It’s likely it’s a housekeeping error or an accidental save-as in a different location.
If you have the newer SU file referenced in a layout file then you have a compete copy imbedded there. Open the Layout file, find a viewport that shows the recent SU file, right click the viewport and choose open with SketchUp. Once it opens save as to a known location or just trace the file pathway to find it.