How can I change the expiry date on a credit card without changing the card number on file?

SOLVED. Thanks for your help.

With some edits.

I signed in at appleid.apple.com, but it still only lets me edit my name and address for the card! No editing for the exp date and CVC. Frustrating.

Helpfully, the appleid suggests trying the Wallet app on my phone, which seemingly offers the same...

BUT... the Wallet app let me remove this card even though it's the only payment method I have for Apple (I couldn't remove it from Settings in my iPhone). And then the Wallet app helpfully let me scan in my new card (with the same number) and voila, I'm back in business.

Further note: I went back to appleid.apple.com and refreshed my Payments page, and the new card shows up (looking just like the old one) except that it now lets me edit the expiration date and CVC number.

A final note: it's possible that the reason I couldn't edit Exp Date with the old card was that the card was superseded by the new card... when I activated the new card it deactivated the old card, and Apple Wallet's way of (not) telling me so was to (helpfully) refuse to let me edit the dead card. At any rate, it's fixed now, hope some of this maybe helps somebody else with a similar problem.