I'd like to trade in my old Watch to Apple when I pick up a new Series 4. I'll have to order that watch for pick-up at the local Apple Store, and would like to trade in the old watch at that time. It's a little unclear how that works, and a chat with an Apple representative wasn't very illuminating. Do you just order the Watch per normal, but when you pick up it up (after your credit card has been charged), you can turn in the old watch and they will issue a refund against that same credit card, rather than giving you a gift card? Has anyone done this to confirm? Many thanks.