Thats because this train is used by very few people to travel between Nagpur and Mumbai. This train takes a very long route via Nanded and takes almost 24 hrs to cover distance between Nagpur and Mumbai wheras other trains cover this distance in about 14-15 hrs. This trains would be used by people who are travelling between intermediate stations like Nagpur to Nanded, Nanded to Mumbai, Aurangabad to Mumbai,etc