The Hollywood Guild contracts are between the guilds and the studios, so the filming location doesn't matter. Even international shoots are subject to the guild

The Hollywood Guild contracts are between the guilds and the studios, so the filming location doesn't matter. Even international shoots are subject to the guild agreements. Georgia didn't mop up any non-union filming work. The state decided to hand out a lot of tax credits for filming in Georgia, and that's the only reason studios film there.