So you still have not asked the affected command about duplicati-bb7003aad5c8f43ba8f40f4b1199f6d77.dblock.zip.aes on original system to see if you get clean reply?
You might just have an extra usless dindex pointing to a dblock that isn’t there but has no relevance…
If you mean start fresh (and lose old versions), you certainly can (and feel more secure), if you prefer it.
EDIT:
is another option, and above that you can see a difficult-and-uncertain method for checking the situation.