It seems that you have qualified the entrance for both engineering and for the medical also. Now you have filled the choices for the engineering in the first round and you want to fill the choices in the karnataka medical counselling. It can be possible but in order toparticipate into the second round of the medical counselling process you need to first register online for the counselling process and then only you will be able to go for the counselling process. If you have not registered online for the medical counselling then you will not be able to participate into the karnataka counselling.