A year ago, during Open Beta, I've played a little bit on PS3. Naturally, using my PSN ID. Some time later, I bought the full game on PC, but registered it with a new SE Account. Now, I'm thinking about switching to PS4, but:

a) I absolutely must keep my current character.
b) I need it to be linked with my PSN ID.

As far as I know, PSN ID sticks to specific SE Account and can't be unlinked or switched to another. But, is it still true about accounts linked during OBT?

And, by the way, is there some way to check if my PSN ID is linked or not without actually buying the game?

Thanks.