It seems to me that "Save All" command does not save all modified files.

I can have an assembly, with all its sub-assemblies, parts and associated drawings open in SW. When I click "Save All", and OK to any pop up windows, and go to check-in, several files will show as needing update and save.

If I go to each of these files in turn and save them, other files then need saving, so I can end up chasing these around indefinitely. This particularly affects mirrored parts.

Tried lots of ideas: closing and opening all files, restarting SW, the order of manual saving/updating.

While I'm confident that I'm not checking in out of date models. it is frustrating that assemblies are showing that components need updating. I don't want to turn off the error messages, this feels risky

I'd appreciate any thoughts, I'm surprised I couldn't find anyone else with the same complaint!