Thanks for responding. AIF is what the sound editor said he could work with.
It’s a 20 minute narrative with tracks 1,2 being stereo dialogue, tracks 3,4 being stereo supplementary dialogue, tracks 5,6 being stereo SFX, tracks 7,8 being stereo v/o, and tracks 9/10 being stereo music.
Perhaps the sound editor is using something other than ProTools (therefore non-OMF of AAC export).
My real question is…why is the output ending up being a different length than the in and out point on the timeline?