EmployeeEmployeeThanks @Stefan W - I believe this *might* be down to collector resources.
https://www.logicmonitor.com/support/collectors/collector-overview/collector-capacity
'In general, the SSE requires half of the amount of memory allotted to the JVM. The memory requirements are not shared, rather the SSE requirement is in addition to the JVM memory requirements. If the Collector does not have this memory available, the SSE will not start and you will see “Can’t find the SSE Collector Group” in the Collector Status dialog. The Collector will work without the SSE, but Groovy scripts will be executed from the Agent instead of the SSE.'
My first guess is that those collectors responsible for the working metrics are starting without the SSE, for this reason.
