Originally Posted by docbert

FA's have the right to move a passenger out of an exit row seat for safety reasons, and given that this can happen after the door has been closed (or even potentially whilst in flight) I'd be fairly sure there is no need for them to issue a new boarding pass when doing do.

Of course, I'm not suggesting that a quarter-sized bruise is a valid 'safety reason', just that potentially there is no requirement to do what you're asking for. Still may have been enough to get the point across...