You can change an expiration date on a credit card, change the recurring status, or make a change to an account number or bank name of a checking or savings account. Your permission profile must have edit permissions enabled in order to edit an account.
To edit an account (credit card or ACH):
Right-click on the account you want to edit and select Edit. This displays the Edit Credit (or Bank) Account window for the selected account.

To change the account number (which is masked except for the last four digits), click the Edit button. This displays the Edit Bank Account Number dialog with the old value masked.

Enter the new account number in the New Value field.
Re-enter the new account number in the New Value field.
Click Save. The new number is displayed with masking.

Note
The procedure is the same to edit a credit card number. LEC account numbers are not directly editable, but are displayed with the same masking on their edit dialog.