dear sir.. upgradation SL se 2A me bhi hota hai n 3A se 1A me bhi.. there is not such law that 3A will be upgrade to 2A only..
and if ur Coach was after H2 that means 2A ke 6 coaches rahe honge.. ye train already 22 coaches ke sath chal rahi hai .. 3A me bhi BE1 add kiya gaya hai so pakka 2A hi hataya gaya hoga