GST on advances that has been carried forward after 30th june 2017.

I have a question...

If Mr. Sohan (Jharkhand) supplies goods to Mr. Mohan (Delhi) on a continuous basis. Mr. Sohan sent goods worth Rs. 1,00,000 on 15th July for which Mr. Mohan made an advance payment (Part Payment) on 12th June..... When raisng bill in July after implementation of GST  Will GST apply?

Means Mr. Sohan has to raise GST Bill or Other bill....

Plz Ans....

Since Mr. Sohan will be raising Bill in July under GST Regime then Invoice will be prepared as per GST Rules and GST will be levied on that sale.