Synology Active Backup for Business Exporting

I have a client that is decommissioning two servers that I have been backing up with my own Synology NAS. They want the final backup to keep for an archive. I see there is a way to restore it bare metal but I’m basically looking for an iso or image file of this server. any ideas on how to do this or if it’s possible?

Not that I am aware of but you could restore it to a VM and export the VM as an OVA file.