One thing that has happened since I posted about my successful AA mile use for a U (Coach) outbound from LAX and F (Business) return - TN has cancelled both flights! Originally, it was a A340 in April flying as TN111/LAX-PPT. They have subbed in the 787 and I was rebooked on TN7. They have also cancelled TN102/PPT-LAX, but so far have not subbed in another flight/aircraft on that date. I talked with TN agents in LAX and they said the company is currently reworking flight schedules and to hold tight.
The only reason I bring this up is because AA doesn't know the flight 102 is cancelled. The TN agent told me that their liason will notify partner airlines when they have a solid schedule - until then "phantom inventory" exists.