I'll be happy to share the details with you, support61.
Simply open the recurring sales receipt and click the credit card button below the Payment method section. Example: Visa xxxxxx8548. Then, click the pencil icon to edit the details. That will do it.
Having a reminder for cards about to expire is a great option. However, this is not available.
If you need anything else, please don't hesitate to go back to this thread. Have a good one!