Hello Aspirant ,

From your question it seems like you already got AIIMS seat through AIQ and now you are aiming to attend the TN state counselling for CMC Vellore . As per the MCC AIQ counselling rules , since you have got a seat through All India Counselling and has completed the admission procedure , you would not longer be allowed to leave it and you are not eligible for further counselling. Also , you will have to submit the original documents while attending the counselling procedure because there will be a verification process , xerox copies will not be accepted.You are lucky to have got AIIMS so I think you should think very well before leaving it as it is a most reputed medical institution in India. Take a careful decision . You can once go through the counselling rules regarding AIQ through the official MCC website .

Hope this helps

https://medicine.careers360.com/articles/neet-counselling-faqs

All the best