If they wanted to halt at Bijapur for half an hour then they would be showing arrival at Bijapur around 5.45 am not at 6.35 am na? And also TT post Bijapur is not changed which shows some where between bijpaur and ibrahimpur due to some doubling works they might be regulating this train at Ibrahimpur but one more doubt is they should have mentioned proper duration for revised timings. But here its permanent time changed means you are right it will be made to halt at bijapur for water refuiling purpose.