Hi asmita, 

It means they have chosen the upgaradation option. 

Which is available for those who have got a seat in the first round but they are not satisfied with that college they want somewhat more better college and they are want to participate in counseling  for having a better college. 

For any other information you can ask us. 

It means that they do hold the chance to upgrade themselves in the counselling so its not of use it depends totally upon them whether they take it or leave it what ever you have been allotted focus and go through it. You must check out all the relecy details as soon as possible.

Dear student, the candidates who have not opted freeze option in the round one of NEET UG 2019 counselling procedure, they have been given option to choose another seaet if you wish to get admission in that college. This option is generally for those students who wish to get upgraded or change their college if they get a better one.