Rs. 2 lac is SEZ with tax exempt turnover for Dec 2017.   Instead of entering the same in GSTR1 under 8A, 8B, 8C, 8D for the moonth of dec 2017 it is wrongly entered in Nov 2017 returns.   I went back to nov 2017 GSTR1 returns and entered as "0" and saved it.   But still the 8a,8b,8c,8d shows the same value Rs.2 lac in nov 2017.    Please help me in deleting the details in nov 2017 GSTR1.