carry fwd of exemption( old to new syllabus)

my frind got exemption in mics in may 2010 attempt, can it be c/f in new syllabus , if so up to which attempt.

she wants to convert  to new syllabus and write nov 2010 in new syllabus, if she does so will her exemption gets lapsed!!!!!!!!!

if she continues in old syllabus in will her examption stands cancelled in may2011 attempt??

can  subjectwise  exemption be c/f in new syllabus???????