CREW BEING SWAPPED OFF FLTS

Hi
This is for any crew out there. Do we know if all crew are operating on flights as on the rosta or are we being swapped around when we get to check in. I fly tomorrow with a friend and really dont wanna be taken off our flight when we arrive.
Anyone one in ops got an approx dep time for the VS43?
This is for any crew out there. Do we know if all crew are operating on flights as on the rosta or are we being swapped around when we get to check in. I fly tomorrow with a friend and really dont wanna be taken off our flight when we arrive.
Anyone one in ops got an approx dep time for the VS43?