KATAKOMB

I'm new to pkhex and recently bought a GB Operator to back up and edit my original 17/18 year old Emerald save file. One of the things I would like to be able to do is change my OT name since the one I chose as kid is goofy and doesn't match up with the names I've been using in my games since gen 5. I'm assuming I would have to update all the pokemon caught with the old OT to the new one, but would this cause any issues that could corrupt the save file?