Sounds like a "feature". Mine is with every track that I have marked, simply it will not remove the mark. Not like it is a huge deal but would be nice to remove them. Now I have successfully removed the mark from a couple of tracks but is not how it should/needs to be done. If I connect to my player and power on the player and remove the mark with the remote and also in Emplode remove the mark then sync it will remove the mark but it will lock up my sync. Again not ideal and really don't plan on doing it to anymore tracks as it locks up the sync and I have to kill it.