So basically I am making a building that can make Forest Troll Priests, Dark Troll Priests, and Ice Troll Priest and I want to make three upgrades that replaces each priest with a High Priest, I already copied the original Berserker upgrade for each troll and replaced all of the appropriate units and such for the upgrade (ex. where it said Berserker I put in High Priest and where it said Headhunter I put regular priest). I saw that the Orc Barracks trains both Headhunters and Berserkers but it will only train either or, but with my building it is able to train both priest and high priest ( I dont want it to do that). I hope I didn't confuse you, help would be greatly appreciated!