A recent update on the www.travisaoutsourcing.com, the official agents for scheduling appointments with Indian Missions in the U.S. has notified that in December 2009, the Government of India introduced a new rule that restricts foreigners with tourist visa for India from re-visiting India within two months of the last visit.
This new rule affects all Indian tourist visa holders even if they hold a long term tourist visa for India. The frequently asked questions section of the Ministry of Home Affairs in India clarifies that some exceptions may be made on a need bases and if genuine tourists are visiting neighboring countries and their itinerary requires them to travel out through India. Others will need to obtain a permit to re-enter within two months.
Further, this restriction does not apply to persons holding Person of Indian Origin (PIO) card or the status as Overseas Citizen of India (OCI).