Consolidating 2 separate RTC installations.
2 answers
If your goal is to upgrade in place, you can find an Interactive Upgrade page in the Knowledge Center (e.g. Upgrading to 6.0 ). If instead you want to collapse your topology or change your application URI, things get more complex.
https://jazz.net/wiki/bin/view/Deployment/Highleveloverviewofpublicuriandserverrename
https://jazz.net/wiki/bin/view/Deployment/ServerRename