Silly little gripe here - I have been playing on Switch with a Realm and moving back and forth between Windows 10 edition. I take it the various achievements don't synchronize between versions even though its the same Xbox live / Microsoft account? It would be nice if they did. When logging into the realm on Windows 10 after completing many of them on the Switch, they are all empty. Its all the same account heeeh.
I know its silly, I have just been having fun knocking them off the list.