Ganga Sagar Express - सारे तीर्थ बार-बार, गंगासागर एक बार - Rahul Kumar

Right Now I am working as a Goods Gaurd in Basic 13370 with grade pay 2800, but i had allready received grade pay of 4200 while I was in TT after receiving 4200 gp I passeed Goods Guard exam, and i had also taken training for that, department has taken my written letter that I had no problem to work in 2800 gp, after fixation they posted me into downgrade that is 2800, now i want to go in 4200 gp with older post (TT), what is the prosses for that? while i was in 4200 gp my basic pay was 14770 now I had financial loss, please help me.........