GST related query

Monish Raju Raju (1 Points)

13 December 2018  
One of my friend applies for GST number and got their GSTIN by 12th December 2018 for their Restaurant which was started in August 2018...... They are using their Current account From November 1st 2018.

While filing GST return, Should we have to file the transactions from 12th December 2018 or 1st November 2018?

Also, Should we have to file transactions from August 2018 in this case?