Some notes on using position music.
1. If you use only 10 -15 seconds of a track, it doesn't seem to be picked up at all.
2. If you use a minute or two of a track, it will get picked up but released soon after, typically.
3. If you use a track that is longer than two minutes, it may get released but then reclaimed. So it will require you to contact them through email. I believe this could happen too while using multiple tracks or using the same track mutiple times in the video.
After learning this, I adjusted my outro and now I never get any claims unless I use the full track, in which case I expect that I may need to contact them. So it's just part of the upload procedure now.