They might have 8 tracks of production sound. They merge that all to 2 tracks, sync those 2 tracks to their telecined video, and edit with 2 tracks of audio.
Then in audio post, they want to pull in all 8 tracks for every shot.
I’ve worked with 4 tracks of production sound, but I cut them all in for every shot, so they were instantly available to sound post via OMF.
I guess these folks have too many tracks to edit with the originals.