I have found that in 12677 from CBE to ERS AC Chair car tickets are in PQWL. Whatever be the PQWL number it gets confirmed. Sometimes after getting into the train I find more than 50% seats are vacant though my ticket was PQWL. I feel this may be due to a large number of passengers travel from SBC to CBE and hence the seats from CBE are vacant. If this is so while charting, does all the seats getting vacant at CBE are allotted to PQWL passengers from CBE. Kindly clarify.