Gst return for dealers applying registration in aug

Sorry, couldn't get you. I mean to say that if anyone has applied for GST registration in Aug. and thus he will charge GST and take credit of GST from date of application. Will he need to file GSTR for July month?

In many cases, especially those who were under exempt or tax free category, have not taken registration by July 30th? In registration form, they were liable to tax from 1st July. Do they need to file return for July? Can they get credit and pass credit on July invoices, after getting regsitered?