I've base (City Living patch) from G4TW, what to do for newest version?

HELLO guys, thanks for the update again! But I've a question, well, it start from here... So, I've a base game from G4TW (Thanks for it), and recently i found out this alternative has come out (yEAH), but i'm not really sure how to and what should i do to update the base game to newest version. Should i download all the expansion and even the base game again from the ZLorigin, or just the newest expansions and new update that the old patch (City Living) doesn't has from ZLorigin?
Once again thanks for everything that brings us happiness! 
(Ma grammar   )