Question regarding comment set -2 instead of -1 to ensure that these tracks will not be selected in matching.

[ronghanghu]

Hi, I'm trying to adapt the MOTR codebase to our own datasets (and thanks for releasing the great work)!

I have a question regarding the comment in

MOTR/models/qim.py

Line 138 in 8690da3

# set -2 instead of -1 to ensure that these tracks will not be selected in matching.

This comment says set -2 instead of -1 to ensure that these tracks will not be selected in matching., but it seems that the code doesn't set the label to -2 anywhere below. Could it be a bug, or am I missing something?

Thank you!