Don_of_War

If you get a Second Proffesion, like monk, then you unlock all those skills. Then, if you change your second profession, then, you unlock the Warrior Skills for example, but keep the monk skills.

However, to regain your Monk skills, you would have to change back to that profession. E.g (From Ranger/Monk, to Ranger/Warrior... Then you would have to go back to Ranger/Monk)

To do this, you have to press 'K' then look for the bit that has, e.g Ranger/'Second Profession'.

Hope this helps, and that it hasnt confused you!