Logged into SL Database Maintenance as SQL sa account and specified SL System DB name in the drop down. Expected the SL application database(s) to appear in the box beneath, but it was empty. There is no difference when selecting the SL Prod system database or the SL Test system database that also reside on this SQL server.
The SQL server where the SL databases reside has a SQL server instance name that needs specified when connecting to Database Maintenance.