The Syncsort™ Capacity Management installer can detect previously installed versions of Athene, but does not reliably instruct you to uninstall older versions to upgrade. You must use the Windows Program Manager in the Control Panel to uninstall previous versions of Athene.
This means you will be asked to specify all the configuration details again during the install (for example, Control Center account details) as indicated in Collecting information before uninstalling Athene. You also need to follow the steps described in Upgrading your database to ensure all these details remain the same.