Due to COVID-19, there is relaxation in the due date of filing returns. In relation to that what if Turnover for the F.Y. 2018-19 was below 5 cr and therefore due date to file GSTR-3B for the month of March-20 is 29th June-20 but for the F.Y. 2019-20 turnover exceeds 5cr hence due date to file GSTR-3B for the month of April-20 is 4th June-20 which is before the due date of GSTR-3B for March month. In such situations can GSTR-3B of April filed before March as books for F.Y. 2019-20 are not finalized?