Once My ticket was upgraded from 2 Ac to 1 Ac in 13072.
Irctc send me an Upgradation msg as That your ticket has been upgraded to 1 Ac & berth no. 10. I had mixed thought regarding the allocation of berth No. as instead of coupe or cabin. Upon seeing the chart I was allotted coupe C upper berth. last berth in 1 Ac. total berth in first Ac is 10. What can you conclude ?