Reply to TSP 2 phase meters

I've noticed a bit of a weird issue the last couple of weeks. For several years, the deck that I'm mixing out of always is the master in traktor, and the newly loaded one is blank (or if I were to sync, it would be the synched deck, but I don't do that). At some point, neither deck stays in master mode anymore, and my phase meter just scrolls. This is sort of a good thing, as it's made me realize that I do look at it a bit too much. That being said, I'm a bit puzzled as to what happened, and how to correct it. Anyone have any ideas?