[Question] 4.1 Spell swapping possible?

[Limstella]

Is spell swapping still doable in 4.1? The only Cataclysm guides I can find on it in the guides section seem to have numerous people unable to get it right, and neither of them have any information on 4.1.

I'd like to figure out how to get rid of Shadowform, but I want to know if it's even still possible before I go slam my head on that.

[Bondorf]

I spent around 4 hours trying to edit arcane blast to blue fireballs with the DBC editors and such, but they didn't work, and when I finally got the MPQ to work it crashed and said something about line width, even though I never touched the lines. If it is, it may need to be done differently.