changing credit card
 

We no longer have the credit card we used to pay for our flight in September. The fare is fully refundable.
What happens if we need to cancel it? Will they accept a new credit card to refund it to?
Even if we keep the flight, do we need to let them know about the credit card no longer active?
Thank you.

Update
 

Update to my post in case anyone faces this issue. We have been informed by our cc company that any refunds made to the old card will be applied to the new card.