Action to be taken for gstr-2

A person has taxable purchases which can be seen in his GSTR-2A, but the same are not reflected in the GSTR-2.

Based on the purchases as reflected in the GSTR-2A he has availed ITC and filed GSTR-3B accordingly.

Now what to do with GSTR-2? If we open GSTR-2 form, only Submit option is activated. Therefore just wanted to know the latest provision regarding the filing of GSTR-2. Further, Why the data of GSTR-2A are not reflecting in the GSTR-2? What is to be done?