Second-generation Indian Americans 'Return' to India

"In 2004, The New York Times reported there were 35,000 "returned nonresident" Indians in the Indian city of Bengaluru (formerly Bangalore). In 2009, The Economist noted that between 2003 and 2005, approximately 5,000 tech-savvy Indians with more than five years' experience in America returned to India.

A 2010 report by the World Economic Forum in collaboration with The Boston Consulting Group found that in 2006, 32,000 second-generation Indians born in the United States or Europe returned to India. Although the report does not define return in temporal terms, it observed that the availability of challenging job positions, strong demand for experienced workers, and the promise of economic growth were crucial in creating such reverse talent flows."
Migration Information Source - For Love and Money: Second-generation Indian Americans 'Return' to India

I don't think this is too unusual. It happened after the break up of the Soviet Union with many 2nd generation Poles, Lithuanians, Latvians, etc. returning to the country of their parents. Also, after China loosened up, a number of Americans of Chinese ancestry saw new opportunity. When Ireland had its boom economy in the late 90s, many Irish diaspora returned home. It will be interesting to see if they are welcomed with open arms, since they had so many advantages the people who stayed behind didn't.