transition issue

In GST Point of Taxation is Time of supply:

The time of supply of goods shall be the earlier of the following dates –
 (a) The date of issuing of invoice (or the last day by which invoice should   have been issued)
OR
(b) The date of receipt of payment
-whichever is earlier

The above case is not covered under gst as invoice is issued on 30.06.2017. the same shall be liable to VAT only

In such a case VAT to be charged