[GDTH] Can I undo changes?

I used this tool to try and see all the skills and abilities from each class/combo. Due to my confusion I loaded up my main character and set its fire resistance to 80% by mistake. I figured this would change if I just reloaded the game without the tool running, but my character is still sitting at 80% fire res and I don’t see any modifiers on my gear that adds fire resistance. Is there a way to undo the changes or have I borked my character?