The reason could have also been DHN not wanting to keep the train or maybe no space. Barauni and DHN are both part of East Central Railways so I am sure DHN division would have been asked and then only approval given. It is also a loss for Kerala as well since ERS didnt have space and also the time to receive this train. So they decided to terminate at CBE. Now there is suddenly a section of people again asking for the train to be sent to Ernakulam !!