As the TT of 12259/12260 is very aggressive so it was continued with WAP-7 till 2011. After that without any significant reason it's Loco Link changed to WAP-4 and the train becomes a "Late Runner" since 2012. From 2009 to 2011 if it makes delay 1 or 2 days in a month but from 2012 it becomes a "Frequent Late Runner" it's priority too is reduced.