AWS & Wasabi – Backup sets created before 4.2 can’t be reconfigured or backed-up
Backup sets created in Zmanda versions prior to 4.2, which use AWS or Wasabi as Storage, can’t be reconfigured or...
The clone of ZCS backup sets with duplicate storage option fails with an attribute error. This KB article will help you with a work around for this issue.
The presence of a bug in the ZCS code is the root cause of this issue. While cloning a backupset, you have the ability to duplicate the storage as well.

However, due to the bug, when this option is selected, the clone of the backupset fails with an attribute error.
This issue is currently being addressed. To work around this issue, users can create a new backupset manually. To do this, follow these steps:
You will now have a duplicate backup set.
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