Proxmox version upgrade

[Boss]

Hi - Currently running v8.1.3 on 3 nodes clustered together.
Are there any issues with updating just 1 node to8.2.x initially with the other 2 remaining at 8.1.3?
This is just to test the new version to ensure there are no "surprises" before updating the other 2 nodes.
Is there any doco available detailing how to roll back to a previous version in case I do have problems?

 

[fabian]

some features might not work unless both ends are upgraded. you might need to connect to node A to manage node A, and to node B to manage node B if there is some incompatibility with the UI files and the API (we try to avoid those where possible, but it isn't always feasible).

downgrading is not supported.