Synology Active Backup with N+1 Microsoft 365 tenancies

[pete]

Is anyone using the same Synology NAS to backup two or more Microsoft 365 tenancies?

 

Testing it here, I'm finding that the Active Backup restore portal doesn't keep the correct tenancy selected during backup browsing / restoring if you have N+1 tenancies.

 

I haven't yet restarted services or rebooted the Synology since adding the second tenancy.

 

More detail:

 

• BigTenancy01 - Scheduled backup of some test sharepoint sites (50GB). Backup and restore works without issue.
  
• SmallerTenancy02 - Full backup (250GB or so). Backup completes without issue.
  
• When browsing to restore (after adding SmallerTenancy02), the restore portal struggles to keep the correct tenancy selected.