I would just overwrite the old set, as the game names remain exactly the same. Although from 209 to 219 more stuff could have changed.
I went through the whole set, mine is 210, and kept only the games I want, actually still quite many, and I won’t change anymore, don’t really bother if some game has been added or updated, as they all work fine. Messing around can unfortunately cause problems, problems that I don’t necessarily have the time for to fix ?