The way how I read how the sets of animatronics work is that the old ones function the exact same as the previous game. The new animatronics won't attack you on your own because they have facial recognition software and know that you're not an endoskeleton. The new animatronics hate the old ones because of how they're falling apart and everything (the common guess being the old ones were kept around for scrap) so they're basically hunting them around the pizza place. The thing about it is, you have no doors now.
The only thing you can do to hide is to put on a Freddy Fazbear mask. The thing about this though is that this only fools the old animatronics. As for the new ones? If you wear the mask in front of them, they attack you because they think you're one of the broken animatronics. It's a game of "should I" or "should I not" with putting the mask on, because one wrong move and oh fuck, that's one of the new ones, you're dead.