Fungibility of gold and gold mini?

#1
I am long 1 Kg in Gold and short 1 Kg in Gold Mini contracts expiring on 5th December and don't plan to square off my positions. Would I be compulsorily required to take delivery in Gold and give delivery in Gold Mini ? Or would MCX net my positions in gold with gold mini and not ask for delivery? If I am obligated to take and give delivery, then I will incur sales tax of 3.5% which is not desirable. Please advise.

Thanks
 
#3
What abt Mini and Petal? What if the broker is such that he auto square's off each contract before expiry for cash settle?
 

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