Guys, thanks! I removed the Ment wheel, and I figured out the old heroes myself. For those who don't know what happened to the old heroes, I'll explain with an example:
for the hero Nibros (Demon Lord), he initially had the racial ability and initial attack with tactics skills; in the mod, he has the racial ability and luck. I restored it. To do this, open the mod with WinRAR, find the mapsobject folder, select the desired race, and delete everything except the New folder. That's it!