no sir,
if seats are AVl at source charting it becomes avl at Current Bookings.
then whatever is booked till 2nd charting, then the remaining seats if avl moves to next charting stn. then its made to clear the WL of that stn. then if any seats still left then that is avl for Current bookings for that RLWL stn. after 2nd charting of that stn, it moves to 3rd RL charting. & this goes on.