I have two separate 6.X Presence cluster installed. Each Presence cluster is connected to its own Call Manager cluster. I have set up an intercluster trunk between the two Presence cluster. The trunk is working fine. The Troubleshooter reports no error, all green checkmarks on the Intecluster component. Where I am having an issue is a CUPC user in one cluster does not see the status of the other CUPC user in another cluster. All they see is the other user offline. Within each cluster, CUPC users do not have this issue. I have the same Enterprise Proxy Domain set up on both Presence cluster. We're running CUP 6.0.2 on one cluster and CUP 6.0.4 on the other. I would appreciate any insights. Thank you.