The United FA's do get paid for carry over carry in conflicts to a point . Say for instance you have a 3 day trip that starts on the last day of January bid month (ends 2nd day of February). For February you bid a three day trip that starts on the 2nd day of February. The trip is dropped. the third and fourth day of your trip you are pay protected however placed on RX (essentially top of reserve list for reassignment) currently they have the option of dropping those RX days with the forfeiture of pay protection. Many commuters use just as vehicle to gain more days off. Obviously if you hold 28 hour three day long haul stuff...not a wise strategy. Remember however with no mandatory retirement.......there comes a point on the list where there just isn't any movement.......using EWR or IAD as an example ...........three day trips to Western Europe worth 16.5 is about as good as it's gonna get and taking the ability to intentional disrupt away will not help a large chunk of that workgroup so you can see why they don't want it.