It's just for 2 months the route is not changed permanent And will have to wait for next notification.The Tickets are not filling and running with empty only 10 tickets are filled out of 195.you can check in IRCTC.Might be some other reason they are rerouted might be They are plan to commission double and electrification line from Devarapalli to Penukonda which is in pink book target June 2021.