Change excise registration number

Dear  Friends

Pls give the solution of my problem… Thanks

We are register in Excise Dealer for last 5 year but some technical problem our database is not in excise department till date we submitted manual retunes but now e-retunes is compulsory

I concern with excise department the suggested me for new online registration and I do that and now I got my new excise registration number and will get password soon for e-filing

But I face problem first quarter is compiled and over one month I manually submit 1^st quarter retune and from 1^st of august I have start transition with new number but what about my one month retune and my pending stock

I have pending stock with old registration number … its necessary to  Nill stock for new number

My other information reaming same only excise number change

Pls do the best