Gstr1 amendment

Dear All,

One of my Client GSTN is wrongly mentioned in Feb 2018 GSTR1. We found the same while filing Sep 2018 GSTR1. So while filing the GSTR1 of Sep 2018, we have amended the wrong GSTN to new GSTN in the 9A - Amended B2B invoice column. 

Till now there is no change in the old GSTN's GSTR2A and no updation in new GSTN's GSTR2A.

Please help,

Thanks.