After the Bank of Communications credit card replacement card is activated, the old credit card automatically becomes invalid and cannot be used. After the loss of a credit card is reported, the issuing bank will temporarily freeze the reported credit card account, and the credit card cannot be used during the freezing period to prevent the credit card from being stolen.

After the loss of the credit card is reported, the new credit card number is different from the original card number, but all the business on the old credit card will be automatically transferred to the new credit card, such as arrears, installment, SMS notification, online banking and so on.