Your card number and expiry date change when:
your card is replaced after being lost or stolen
your card expires
an account is transferred within the same payment network (for example, from Visa to Visa or from Mastercard to Mastercard) and the credit card number changes. The automated update will not be done when an account is transferred from
Visa to Mastercard or from Mastercard to Visa.
your card is replaced as a preventative measure