When I run install and I put the IP of my Publisher I only get the IP of my Publisher for all 3 (AXL Service, Cisco Unified CM Telephony Subsystem, and RMCM Subsystem). If I put the IP of my Subscriber, I get the IP of my subscriber in AXL Service Provider, but now I see both IP's in CUCM Telephony Subsystem and RMCM Subsystem. Is there something I am missing during the setup process?
If I understand correctly looks like you are not seeing all the CUCM IP address in the UCCX "Cisco Unified CM Configuratio" page.
This generally happens if the CUCm server's are set with "hostname" (system - server) and UCCX is not able to ping the CUCM serveres with there hostnames.
If this is the case add the CUCM hostname in hostfile of UCCX and check if all the CUCM info populates