cs exemption

Ritika Satyawan (50 Points)

17 November 2016  
I got an exemption in a subject in cs executive in December 2015 attempt.
I thought the exemption lasts for 3 attempts.
but I am.still being shown as exempt when I login in my I'd.

I just wanted to confirm what the rule is?
bcoz I have exams In this December.
so do I need to prepare for that subject or not?