As per IR official website, train no-12263 Pune-NZM Duronto Express does not have a stoppage at Surat whereas train no-12264 NZM-Pune Duronto Express has a commercial stoppage at Surat. Due to this IRCTC is only allowing booking in this train from NZM to PUNE but not for PUNE to NZM. Can someone clarify why is it so? Stoppage at a particular station is provided both ways.