Export Refund with payment of IGST

neetesh rajwar (36 Points)

11 May 2018  
In order to applying for refund of igst, we have filed Gstr1(along with table 6) but havnt shown d zero rated supplies in gstr3B.
can we make changes in next period?
Is there anything else we need to do for getting igst refund in case of export with payment of igst?