The reference to the new series by A is only for clock status purposes. When deciding RFP/Snap, remember it's determined by the action that caused the clock to be stopped. in this case, the action that caused the clock to be stopped would have been an awarded series by A. Therefore, even though we replay the down, the clock starts on the RFP. Had the play ended in a run OOB, then even though the down would be replayed, the clock would have started on the snap.