18 Queue Managers are specified in mq.monitor.list in MQMonitor.properties but only 9 Queue Managers are displayed in Investigator. No errors are reported in the agent log file. I modified the configuration to specify *.monitor.manager=minimum" instead of the default .monitor.manager=recommended setting but that did not help.
Running CA APM 10.7 SP2 with EM cluster (MOM + 2 collectors) and a number of MQ Monitor Agent instances. (All are 10.7 SP2).