How to deal withh gst on advances post 15-11-2017

As GST on advance received for supply of goods has been done away with from 15/11/2017, how do we now plan to file our GSTR-1 returns?

For July, both GSTR-3B and GSTR-1 have already been filed with advances.

For August, September and October - GSTR-3B was filed with advance received/advance adjusted and tax paid. So what do we do now when filing GSTR-1? Also when the actual sale of goods takes place say in December or subsequently, then we go for advance adjustment only and ignore any advance received?

For November, do we still have to pay GST on advances till 14/11/2017?

Thanks in advance!