Hello Sukrati, 

If you are alloted with an institute in earlier rounds and completed the document verification and admission part with fee deposition and procured another seat of a different college or institute in the subsequent rounds then it do not worry and get the load off you.

You are all set to go to newer college without much problems. You need to report to the newer institution for admission procedure and fee will be automatically adjusted accordingly and there is not much that you need to do for that. 

Hope it helped you..  :)