In general, the rules governing process in the chamber also apply to committees, with notable exceptions. I can provide you with some references to that after the meeting, if you'd like.
In terms of dealing with motions, it is up to the committee to decide how it deals with its own motions. At this point, there is no order paper or notice paper for committees. It's up to the committee to decide whether those motions remain or, as this new motion might suggest, are abandoned.