Doubts regarding exemption

hello all

having a doubt regarding claiming exemption.... i secured 2 exemptions in may 2011 exams..and also i have claimed those exemptions in the nov 2011 exam..

so do i have to appear in the same paper(i.e. the exempted paper) in nov 2011 exam?? because in ca site it is given that u have to be present in all the papers..

my 2nd doubt is that what marks will be counted for the exempted papers for nov exam?? will the marks secured be counted or will it be counted as 50??