Complete the Upgrade
2. If you installed plug-ins that are GUI extensions for CentraSite Control in the old CentraSite installation, install them in the CentraSite 9.9 installation.
3. If you are using API-Portal with CentraSite, republish all API-Portal instances you created in the old release to API-Portal 9.9. For instructions, see the CentraSite documentation.