I actually just called tech support about this yesterday.

I already had a Collectors copy of 2.0 for PC. I wanted to add a PS4 license. I was told that I absolutely must buy the regular version of the PS4 game. I was informed that if I purchased the collector's again it would actually cause me problems and I wouldn't be able to link the two accounts properly. I purchased the regular and my existing character was available with his CE items.