Hey !

5% reservation for person with disability (PWD)  candidates is cycled over in a 4 year period , category wise , as per rules pertaining to the admitting institute. If for any year , any Pwd seat remains vacant , then it will be reverted back to the same category from which the Pwd seat was assigned for that year.

So , not every year , the Pwd seats are changed into general category seats.  In you case , the remaining seats will be given to that category from.which these seats were assigned for this year. It may be general category also.

To know more , follow the given link:

http://www.uceed.iitb.ac.in/reservation.html

Hope it helps!