dear aspirant,hope you are doing well.now coming to your question,for Mop-up round if the open seats are left vacant in any private university,then actually they are converted to All India general category seats.for further queries related to NEET mop-up round visit:https://www.careers360.com/question-what-is-mop-up-round-in-neet.

hope this helps.

all the best.