When backup snapshots cannot be completed as scheduled, and they are behind, Ops Manager really should NEVER delete the most recent snapshot. For example, if the snapshot retention policy is to take a backup every 24 hours and keep daily backups for 2 days, and weekly backups for 2 weeks, a new snapshot should not automatically expire after 2 days. If backups are not completing for some reason, and it goes 2 days without a successful new snapshot, the most recent daily backups are deleted and we are left with the most recent weekly backup instead. There really should never be a case where the freshest backup snapshot is automatically deleted.