Conversion from IPCC Old (CPT Route) to IPCC Old (Direct Entry)

Hi, I am doing my IPCC in Old Syllabus through CPT route. But, I have completed my graduation. So, now I want to convert to Direct Entry course but under old syllabus. In Self service portal, there is only conversion option to Intermediate and Intermediate (Direct Entry) options. Can I convert to Direct Entry but still write in Old Syllabus? Because I have one attempt left in Old syllabus. So, I want to write in Old syllabus. But I want to start my articles. Is it possible?