Actually there is no such thing as a carbon fiber plate when you have a ferrule, it's a pad, could be carbon, could be fiber, could be another material, but not a plate. I don't see anywhere where dendweller agreed you have a carbon fiber plate. You keep confusing words although I think you have a better understanding than before now.
As to your other question, if the carbon fiber pad wasn't damaged I would see no reason to remove it, you may end up cutting a couple thousandths into it when cutting the tip off but that would be it. If it was damaged and he felt it needed to be removed, he should have put a new one on before putting the tip on. Listening to you describe things, if I were the repair person, the only thing I would have asked you was what tip you wanted.
