Dear Vijay
I am sorry that I could not reply exactly back to you.
I think you should contact someone in ICSI relating to it. We have notification stating exemptions applicable correspondingly. But not what mere passing Group I will effect. In the below link:-
https://www.icsi.edu/webmodules/Student/ANNOUNCEMENT%20OF%20CORRESPONDING%20PAPERWISE%20EXEMPTION%20ON%20SWITCHOVER%20TO%20NEW%20SYLLABUS.pdf
You can find the bottomline
For any general clarification/ information on the matter, students may please contact Shri D D
Garg, Assistant Director (Student Services) at email ID dd.garg @ icsi.edu or at Phone number
(0120-4522072/75)
You can contact the dignatory mentioned above.
In an another notification by ICSI:-
https://www.icsi.edu/Portals/8/Dates/DETAILS%20ON%20NEW%20SYLLABUS%20&%20REVISION%20OF%20FEE%20WEF%2001022013.pdf
It is mentioned in 4th page- 6th point- last para that,
The option of switchover to New Syllabus is required to be exercised at the time of seeking enrollment to examinations and the study materials of New Syllabus, if any, required to be purchased by the students by paying the requisite amount.[which is around Rs.840/- source:-
https://www.csstudentsonlineclub.org/t5422-cs-new-syllabus]
Depending upon the available data, i can tell you that it is best for you to wait for june 2015 and appear in new sylabuss.
Do write if anything not much clear.