I've got one show with multiple audio tracks in the English. Early on in my setup I set "Prefered Audio Title" in the schedule item options to use the one I prefer. It worked and I continued to set things up. Added filler tuned the scheduling to be how I prefer. Then this show came back up again, and the audio track has switched to the first english track instead of the one I configured.
Turned the logging up to debug but didn't see anything that looked relevent at playback time.
Any ideas where to look?