I believe you are asking the age old question if you take a piece of wood from a ship and replace it. The take the old wood and make a new ship. Which one is the original ship?
However, I'd like to say does changing the very thing that makes a Pokémon a Pokémon matter?
🥱. There goes Scott trying to put things into someone else's mouth. A swing and a miss. It must be new for him. He is used to men putting things in his mouth.