So, having a need to halt a flight, I thought I'd use PF3's resume function but failed!
I had enabled autosave data in PF3's options
I was in the enroute portion of the flight
I paused FSX and saved the flight
I disconnected PF3 and closed
I closed FSX
Later...
I restarted FSX with the same saved flight
Let it fully load to the cockpit in pause
Opened PF3 expecting the warning that saved data was detected so I could restart flight
Nothing, just stayed waiting for me to load a flight plan.
What did I do wrong?