It depends on state process bcece counselling process does not required to fill form again and again it is pretty simple. If you get alloted to a college in the first round and you decided to take part in the admission and opt for up gradation, your seat get automatically canceled (forfeited) and given to an other student through Mcc if you get alloted to an other college in second Round. In simple words, you just need to upgrade your option of the college if you dont accept alloted seat in the first round if have gotten a seat in second round.