Hey friends. I'm working on a monster (2000 page) document which has any number of idiosyncrasies, but the newest is a new auto file is generated EVERY time I save. So every time I saved "Chapter 04.fm" I got a popup saying the file had been changed since it last opened (duh, since I was saving it). When I finally closed for the days, I had about 200 auto files that looked like this:
It didn't have the brown and orange FM icon next to it but I archived the Chapter 4.fm (from 7:15 this morning), deleted the rest of them, and renamed the above to Chapter 04.fm. It appears to be fine and opens without issue but come on! ANOTHER auto file is created.
Timed auto-save (which does use the .auto in the filename)
Recover file when you crash
None of them use quite this format: "Chapter 04.auto.fm.auto.4AF.CB5". Are you working off dropbox directly, or another file sharing server? I've learned I can't work on dropbox directly like I can with InDesign because of the saving that goes on in the background with odd filenames that disrupt my book updates.
Can you work on your local drive? And/or disable the timed auto-save in preferences?