Transition - consignment stock related query

TRANSITION - CONSIGNMENT STOCK RELATED QUERY

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MUMBAI PARTY HAVING PURCAHSED WITH EXCISE AND VAT GOODS

SOLD GOODS ON CONSIGNMENT TO BIHAR PARTY

UNSOLD STOCK WERE LYING ON 30/06/2017 AT BIHAR

IN JULY, BIHAR PARTY SOLD CONSIGNMENT GOODS WITH BIHAR GST..(CGST AND SGST)

NOW WHO WILL GET CREDIT OF STOCK AS ON 30/06/2017 ?

OR WHAT ACTION IS REQUIRED