Gstr 9 2a negative figure

Sir, my question is in 2018-19 gst 9 in point 8 show figure upto 1 November and one party supplier file late retun in Feb 2020 related to Feb 2019 sales and this return show at the time of march 19 in gstr 2a as not submitted so i taken this input in that month as input but now only this figure is not show in point 8 autopopulate and negative figure show. What I do now sir? Please advise some.