Now a days lot of such cases happen where ticket in Sleeper at W/L XX remains RAC or W/L, while Ticket in AC-3 in same leg of journey in same train gets Confirmed or betters the status of Sleeper...
Heres one Example were W/L 45 is RAC as of now, while W/L 73 in AC-3T is CNF:-(note:- Status may change later,thats why current status posted_
In Sleeper
...
more... /pnr/post/501643LatestStatus as of: Today (7:47PM) Refresh Status Status Refreshed.
Passenger 1: RAC 8 (Booking Status: W/L 45,GNWL)
In AC-3T
/pnr/post/501098Latest Status as of: Today (7:40PM) Refresh Status
Passenger 1: Confirmed (Booking Status: W/L 73,GNWL)