If that save file affects online in anyway it might thoFolks, I've been able to legally transfer save from yuzu via switch 1 to switch 2. It's all possible. Nintendo doesn't care if it's offline *and legal*
This has been ruled safe for a while now. Usually only games like animal crossing and splatoon get banned since those save mods affect online muuuch more
Pokemon is dependent on if you do a good job or not but the in game legality checker should save you most of the time before you do something silly











