How To Include Supplemental American Express Cards Under the Primary Account

I have three Amex Cards (one for myself, my wife and my daughter) and they're all listed under my primary account. However, I recently noticed there was a change in the one step update feature with Amex. When I attempted to reset the account, it is now asking me to create new accounts for each of the other two Amex cards. However, they're all linked in one account and paid together as a single account. How can I get Quicken to recognize all three account charges under the primary account number.