First the doubling work will be shown as a reason for not extending the TPJ Exp. After the completion of doubling they will find another reason. But they will not extend the train. Kanniya Kumari Dibrugarh train was proposed to be made a daily. It was introduced as a weekly. Now the Railway is stated that the train is not going to become a daily. You can ask for fulfillment of the past proposal of Kanniya Kumari Dibrugarh Daily( Now weekly)