At no point. Indians have a distorted view of caste because of 400 years of British invasion after 500 years of Islamic invasion.
Since economic mobility was greately reduced because of economic stagnation caused by centuries of invasion, they re-applied the originally profession-based caste system using racial discrimination brought to India by the Mughals and the British.
Since economic mobility was greately reduced because of economic stagnation caused by centuries of invasion, they re-applied the originally profession-based caste system using racial discrimination brought to India by the Mughals and the British.