Hello! New to upgrading and I have a few concerns. I hope I'm posting this in the right place.

1) Fairly certain I know the answer to this one since it is an expansion, but for peace of mind, I originally only had A Realm Reborn on PS3, but will be getting Heavensward for PS4. Since I don't have ARR on PS4, would I be unable to launch the game at all regardless of ARR being tied to my service account?

2) When getting Heavensward, I know some people had issues where their copy of the game (or their upgrade of ARR) would actually be assigned to a new service account (as in a new service account would be created), sometimes due to strange wording when upgrading. Is there anything I should know that I should avoid before upgrading, or anything of that sort?

Thanks!