When setting up accounts with a Financial Institution (FI) the FI will download data for all of your accounts, often including those that have been closed at both the FI and in Quicken. If you did not identify that closed account during the Online Services setup process for your new account and did not select Ignore for it during that process, Quicken would have set up a new account for it and would have included it in PW Vault with your other accounts.
Before proceeding, back up your data file.
Did this resolve the issue for you?
In addition to the old, now closed account in Quicken, are there any other accounts still activated for downloading using the old user ID and password? Savings, VISA, loan? The old bank user ID and password will disappear from the Vault only after all accounts using this ID have been deactivated.
@HollyHo - When you said it shows up in Account List as Hidden and Closed, did you mean you are seeing something like this where there is a red circle with a diagonal line through it? I'm just wanting to confirm that it truly is a closed account.