I want to upgrade my current Model X with Model X Plaid.My question is that in the order process do I have to select FSD because I want to transfer my FSD from my current Model X to new Model X.I know my old Model X will be stripped off FSD as it will be transferred to new model x.One thing not clear to me is that should I or should I not select FSD in ordering process of new model x.If someone has already have FSD transfer than please guide. Thanks