I know there are a number of individuals here who use Quicken with USAA. Just a heads up - USAA have apparently changed their application logon procedures and your existing credentials will no longer work.
You'll see this is the case by noting the name of USAA in the online access section has been prefaced with a "zzz".
The OL-220A notification does link to a Quicken document that outlines the steps you'll need to take. Basically disable online access for each of your USAA accounts, then reenable access, linking each USAA account to your corresponding Quicken account.
The only problem I had was that the links they provided to get your Quicken specific credentials from USAA just took me to the main home page. Eventually, after logging into USAA manually, then clicking on one of the links brought me to a page that gave the Quicken specific credentials I had to enter in Quicken.
Strangely enough, searching the USAA online help for Quicken access was of no help, nor was going to the security settings in my USAA profile.
A few of the download transactions were duplicated, but easy to delete those.