Desktop QB 2024-Mac

For years I have had 2 Credit Card accounts. Suddenly one has dropped off the Chart of Accounts. It still exists. It can be found. I can enter its name in the Enter Credit Charges routine, and successfully enter charges to it. BUT, it is not on my Chart of Accounts anymore, thus not available as a menu choice. I have to do a search for the account, and use that result to open its register. It is all there, but where is "there"? Any ideas? Where does it exist.