Invoice Value in GSTR-1 in case of Export of Goods to Nepal

Client exported a machinery to Nepal and raised Invoice of ₹9,64,000.
He separately showed IGST of ₹1,73,520 in the Invoice but didn't charge it from the party and paid IGST from his own pocket.
In the Shipping Bill also, he mentioned ₹9,64,000 only and not the IGST amount.
Now, at the time of filing GSTR-1, we have to mention Invoice Value at a place and Taxable Value at another place(Herein IGST is automatically calculated).
Taxable value will be ₹9,64,00 but what will be Invoice Value? (Will it be inclusive of IGST or Exclusive of IGST)