I got seat in first round and I joined my college..if I get upgraded in next counselling whether my current seat get canceled?

Aruna No, usually on upgrading to round 2 the seat allotted in round one does not cancel. It will cancel when one gets a seat in round 2. The notification for round 2 has not been released by tamil nadu neet pg counselling authority when it will released the procedure for round 2 counselling so wait for the notification. It will clear all your doubts.