TUPE applies, therefore there is no choice. All Flightline crew (ground staff, engineers, cabin crew, flightdeck, ops staff) have to accept it and transfer, or resign. Flightline is not responsible for redundancy therefore if they resign they will get no redundancy. In addition, the market isn't all that good just now, so the best option for the majority will be to transfer albeit with the prospect of doing it again in 16 months.