It's a fallacious deduction that this disproves Aryan migration theory. The DNA from two skeletons found in Rakhigarhi was tested and the results proved that the branch of population of Harappan times in North West India had separated from the Iranian branch way before civilization began in Iran. Therefore it proves that civilisation in india was an indigenous development and didn't spread to Northwest India from Iran.
Since Rakhigarhi and IVC occur before the theorised Aryan migration, so as such no DNA study on Rakhigarhi skeletons can neither prove nor disprove the Aryan migration theory. I'm forgetting the name of the scientist who led this project, but he himself later clarified that his study has no implications over the Aryan migration theory, after such inferences were published in newspaper






