If your credit card expired but the number didn't change, here's what you do:
1) Attach or connect all your LoopPay devices
2) Attach your Fob or Card Reader for card swiping
3) Swipe your card, you shouldn't have to name it, it will update the existing card record. But you'll need to key in your new security code.
That's all there is to it.
No need to delete the card or start from scratch with a "new" swipe.