@Pradyu VSKP: Re# 141869-17
As I upgraded on my own, I have to pay the difference in fare. Some times I have seen even in A/c chair car some seats go vaccant (this is apart from passengers not turning up or cancellation after preparation of chart).
Whenever I travel in SL 1st thing I chk any berth is avbl on A/c . If avbl, I upgrad myself.
As...
more... per bloggers, upgradation is done randomly by the system.
Thanks + Rgds
Kamesh K
SBC