Missing Invoice of March Month.

Dear Sir/Mam,
I have missed my invoice of Mar.18 and i have already filed my GSTR 1 and GSTR 3B upto May.18.

What we do,

1.Can we show that invoice in June. 18. Whether it is right to do this.

2.Can we put that invoice with the same Invoice no. and Dated 05/03/18
or we have to change my invoice date in June.18 GSTR 1.

3. In which column i have to show in GSTR 1.

Please reply asap.

Thanks in Advance.