To the extent of some level of understanding, if it is high priority train, cancellation for entire two three month is not expected.
If it is cancelled, this means that IR doesn't have any idea of its importance of it has lost its charm which was at the time of its introduction.
Otheriwse...
more... kohre ma baaki trains to chal hi rahi hain.
Bahut kam SF , ginti ke 3-4 pairs hi cancelled hai for entire duration.