@DavidFW1960 can you share your automation for the snapshots?
I think I can get the snapshot made as the service is available, however, it would be interesting to see any variables you can pass, like naming the snapshot.
I have a habit of leaving my configuration files open most of the day during a long session of tinkering. A lot of systems have issues trying to back up a file that is already open by someone else.
Could it be that simple?