In order to connect the legacy system to the new primary controller I changed the domain name of the new system to match the old. The wasp probes on both UMP's are now failing.
Release : 9.2.0
Component : UNIFIED INFRASTRUCTURE MGMT
-make a backup copy of the wasp.cfg file
-update all occurrences of the domain change in the wasp.cfg file
-remove the connection string from the wasp.cfg (leaving 'connection =' on the line)
-restart the nimbus service on both the primary hub and the UMP robot