No Digital Early Access code?

[Kogasan]

I know this probably isn't in the right spot but say if I have a ps3 version of ffxiv arr and I buy a ps4 do I have to rebuy ffxiv arr to be able to play heavensward on a ps4? Also if that's the case if I buy the boxed version of ffxiv arr and heavensward and preorder it do I get the access code. Since technically I am not a new player just a player that upgraded their system. It would suck if I don't get it just because I started arr on a ps3 then decided to get a ps4 for the expac. Also say if my ps3 doesn't work any more is there a way to unsync my ffxiv arr key for ps3 and then resync it to my ps4. Since I won't be able to use my ps3 anymore that has my ffxiv arr key applied to it.