Applicability of syllabus

I have completed my b.com course in the year 2017. I have cleared my CPT also.I have also reegisterd for IPCC(both groups) in 2016.Now i want to convert my to direct entry route from cpt route.My doubt is that whether new syllabus will for me or old syllabus only?.......When i can give my last attempt for IPCC exam?