Quests with skill rewards

At the moment one of my characters is doing his ascension quests. When I have done it and want to change my secondary profession, what happens to the open quests I still have which reward me with a skill for my primary and secondary profession. Does it give me a skill for my new secondary profession or do I first need to drop that quest?

As far as i know you gotta drop it first. Otherwise you will just unlock skills you cant use with that character since you changed your secondary (can use em with PvP Char though)

Ok thats all I wanted to know, thnx.