My CGST payable 2560.00 and SGST payable 2560.00. I have IGST input 4095.00 and CGST input earlier 4084.00. when I went to payment set off total payable automatically shown only SGST Rs. 1025.00. My question is if I settled manually Total SGST with IGST input and balance IGST (4095-2560) = 1535 with CGST then my payable will be Nil. But system did not admitted to do that. Why?