Let us suppose you are right.
Why do you think current day India is the heir of aryans only ,even if such invasion/migration took place?We have always maintained we are a mixed people in general with several regions having dominance of particular racial types.These racial theories you pakistani trolls obsess over are so 19th century.Our history -the history of india is history of all these people,the collective experience of their past ,whether it be the north east,north india,east idnia,west india or south indian people.We accept both the greatness and failings of our history,unlike many of u lot who are so ashamed of being associated with 'hindu' history.And just for the fact if there is no r1a1 haplogroup as your 'suspicion' suggests it would also mean modern day pakistanis have no claim to IVC either ,as they are abundant in that.If you are wrong,you guys are just clutching at straws and getting excited over what could be a bureaucratic delay(routine stuff in india) -either way you have nothing celebrate about,lol.