I assume the album you’re dealing with doesn’t come up with any matches using the Identify feature?
Either way, the order in Roon will be based on your tags and file names, so you should be able to edit the files directly (although I understand from your other thread for now you may have to restart Roon or enabled/disable the NAS if you want the changes picked up immediately).
Let me know how that goes @fritzg – I think this should work, but if not I’d like to understand why and get it fixed for you.