So I recently bought a +1 Reincarnation for my character Lusii. She was a sorcerer/paladin/monk. I wanted to switch out that level of monk for a level of paladin. However, I accidentally traded a level of sorcerer for a level of paladin instead. I wasn't always sure which class I'm trading during the leveling process.

I could find no way to undo this decision in the reincarnation process. Is there any way to fix this? Please tell me that I don't have to buy another +1 Reincarnation just to undo this mistake.