Backup , Restore

I have Community version 6.0 that i want to take a full backup of (buckets and indexes) and load into a new docker community version 6.5.1. The backup process is fine… The restore process is 1) requiring a list of buckets to restore. 2) i get an auth type error when i try to restore to the 6.5.1.

Question: can i back and restore to different versions ?
Question: Can i restore an entire back without having to specify target buckets and where buckets done exist.