thanks for this repo
In
trackers/core/deepsort/tracker.py
_get_associated_indices
the association between detections and trackers is made using combined_dist (combined distance from IOU and appearance distance (line 160 and followings)
but to update the detections (line 280) function "update_detections_with_track_ids is used"
and this function (line 112) only use IOU to match indices
It seems that to be consistent the same combined distance should be used