Hi barryf,
are the agents members of that queue?
Yes. As you can see from the screenshot, I am querying only one queue, and QM is returning N.agents = 2 and Ready Agents = 2 for "All selected" and none for the only queue I actually queried.
Therefore QM knows that there are 2 ready agents in the queue, but is only returning them for all selected and not the actual queue itself.