BUG: F360 always offers current backup file when opening prior version of a file

[GRSnyder]

If you are editing the current version of a Fusion 360 document and then open an earlier version of the document for comparison, Fusion 360 consistently reports "A recovery document exists for <current version of document>.3d, because Fusion closed unexpectedly the last time it was open. <current version>: Auto-saved at 04:37 PM, May 6, 2024. If you do not open the recovery document, it will be deleted. Do you want to open the recovery file instead?"

It seems to simply do a check for any autosaves of the document, regardless of version. There are a couple of interrelated problems here:

• If you say Yes, Fusion 360 opens the most recent autosave of the current version (which you are currently editing), but changes the name to reflect the old version. For example, if you are editing v22, then open v20 and accept the recovery file, Fusion 360 renames it "Document (v20~recovered)" when it is no such thing.
• If you say No, presumably Fusion 360 does delete the autosave checkpoint for the current version of the file, leaving you unprotected. If you don't make any further changes to the document and the machine later crashes, you will lose everything.
• The dialog's basic claim, that there exists an autosave of the previous version, is just plain wrong. There is nothing related to that version of the file that has been saved, and there is nothing to recover.

This is 100% reproducible, at least on Mac. But note that you need to get Fusion 360 to put down an autosave file. So the procedure to reproduce is:

• Open the current version of a test document. There must be multiple versions.
• Modify the document and don't save.
• Wait 5 minutes or so to give Fusion 360 time to create the autosave.
• Open a previous version of the test document.