I've had a situation were an archive that was used 5 months ago as has been used again as primary again during archive shift and resulted in an archive gap and the original data missing.
I'm trying to get a better understanding as to why this would happen but I'm unable to see anything that stands out in the pimsg logs unless I've missed something I should be looking for?
I've got a working backup routine so its not been an issue to recover the archive to prevent data loss and I've not had a recurrence since.
Auto archive is setup
Plenty of disc space was available
Empty archives were available
Any information on what could cause this or what to look for in the log files would be appreciated