Our transition has protections, not quite the same but close. They cannot drop days in the middle but only from the end and pay protect you. I had 10 days straight over the Jan/Feb. transition and when our final schedules came out yesterday I was down to 4 working days. The 6 dropped days are pay protected and if I want to work over those days it goes on top of guarantee. Right now 21 days off worth 75 hours with 25 block hours. I'm a senior FO but this is an example of how transitions works.