You can make Loco Reversal at Bidar and take it through Gulbarga as it being CR train it will be no doubt taking Khanapur Gulbarga in loop as they both come into CR. And also in commercial way train through Gulbarga makes profitable as lot of pax can be fetched for this train from Gulbarga which is major demand from people of Gulbarga to have train to Bengaluru.