No one should be involuntarily moved from a left seat to a right seat (except perhaps some of the most recent upgrades who took slots the company intended for MD captains, training is free though). However, some folks may be learning a new jet this year. In my case, if I were one of the very recent upgrades who had already completed training I would structure my system bid to maximize company pain for my displacement. After all, if I don’t like my new displaced to seat, there is no seat lock. I can bid for something else on the next bid.