First, I apologize if this is the wrong section to post this question in...

I've played since Phase III of the Beta on PS3 and played on the PS3 for about a year til I upgraded to the PS4 (didn't do the digital upgrade, so I can still technically play on PS3 with my account as well), did the full installation etc no problem.

Now, my daughter wants to play and she has a copy of the game... but we only have one PS4 console (at this time). I'm curious if she enters the 12 registration code included in the PS4 physical copy... will that interfere with already installed version? Can she enter the code, and then get the code she needs to finish setting up her account, even when the game (and Heavensward) is already installed/updated?