This PR has been discussed in thread 25601.
https://forum.freecadweb.org/viewtopic.php?f=8&t=25601
This PR first solves the little problem around the number of saves kept when changed in configuration. The number can be increased but not reduced.
It proposes that the name of the archives have the date in their names instead of numbers, what help sorting the archives.
When a errors occurs while saving a windows pops up to the user warning him.
Finally as there is no reuse of the name of the archive just deleted, hopefully, the problem introduced by Google Drive introducing a delay between the request of the deletion and the effective deletion, and making the save incomplete on windows is solved.
Regards