Comment by qnleigh

These kinds of issues can be incredibly disruptive and distressing for non tech-savy users. You update your OS and suddenly it looks like a lot of your data are corrupted, with no explanation of how to get it back.

Forcing saving to OneDrive causes this issue a lot too. I was stunned to find that saving changes to an existing document will often try to save a new file in OneDrive instead. So if you don't notice this and go back to your original file, it will look like your changes weren't saved.