As usual as per my personal experience two years ago on occasion of my nephew marriage We booked 60+ tickets in Vaishali Exp. But due to some reasons more than 5 relatives were not came with us. My brother talked to the TTE and he said the above reply about EDR. After return back to home I went to the PRS after 10 days and trying to take cash. The clerk found EDR and cancel the ticket and gave me cash and cancillation receipt.