That means the TB is incorrect. Even you know that day I went to book a ticket for BBN JS, a senior citizen man was before me he wanted a ticket for 15017 Kashi Exp. But the ECRC saw the system and told him to change Kashi Exp to Gorakhpur Exp in the Reservation requisition form. Just think nothing is updated in the system as well. LTT GKP was the old name of Kashi.