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BugZero found this defect 1763 days ago.
After the MetroCluster switchover a backup job with the SnapVault or SnapMirror specified on the Secondary Target tab cannot update these relationships.
Unfortunately this is a bug in the OnTap Data Management software. In the event of a switchover Veeam Backup&Replication cannot identify SnapVault/SnapMirror relationships.
You can trigger manual relationship update with the mandatory -source-snapshot option (for example after switching back to production). In a few minutes the updated relationship appears in the output of zAPI get-destination-iter call. IMPORTANT: there must be at least 1 storage snapshot that wasn’t transferred to the target. If you specify a snapshot in -source-snapshot that was already transferred, such relationship will not appear in the get-destination-iter output.