Help with 1.3 update for Mac

[xxjaz1228]

I'm not 100% sure but I think the Mac version is deployed as a full game with the update. In fact I think all game downloads include the patch. Not sure if the patch can be gotten separately anywhere anymore unless the thread here still has it...

Ah yes, as it says here: https://www.frictionalgames.com/forum/thread-24334.html

Hmm damn okay. It'd just be a pain to lose all the custom stories I already downloaded on there, I have a bunch. But I guess I'll go ahead and download it again so everything can actually run smoothly. Do I need to somehow uninstall the game that I already have downloaded on the mac before I download the one with the update?
(sorry for all the questions)