Copy TM backups from shared TM volume to new HD
I am using a Drobo Gen2 as a TM backup drive. I have three Macs that backup to this drive. The volume was shared as a TM backup drive. The Drobo will not work in Catalina and above so I want to reuse the drive pack in an external Raid enclosure. I want to copy the current backups to a new volume however
I can only 'see' the backups for the attached Mac. The backups for the other two Macs are not accessible.
Any ideas on how to transfer all these backups to a new HD?
OS10.14.6
iMac 27″, macOS 11.0