Input credit for service tax

Dear All ,

While filing the ST return for OCT-MAR 14 , we had an excess input of Rs.10lacs , but now the company has given NIL services for the period APRIL to SEP 14 and the company is also planning to cancel his SERVICE TAX registration , 

so please let me know in this what will happen to the unutilised INPUT CREDIT of Rs.10 lacs , is there any way to write off the same ??? or it can be transferred to its parent holding company ??

Regards