Its complex & history doesnt project trend in IR WL Clearance!!!
In peak season, WL behave differently, while in off season, it behaves differently!!
If new Spl train introduced last season, mayb someone's long WL get cleared coz of multiple cancellation due to that spl.
But wht if this season tht spl doesnt run, people will do Reservation based on that WL Clearance trend...
more... & will not get it cleared!!!!