Can't change custom class skills

I just figured out a problem, and already found another. GREAT.
So I put the thief class data above the second General, and for some reason,
every time I try to change their skills, it just resets back to normal.Is there a way to fix this?

sigh Nevermind, you just had to press the separate classes data button that I never saw.
Sorry for wasting anyone’s time.