Re registration of ipcc course

The IPCC registration is valid for a period of 4 years and after expiry of such period you must immediately re-validate your registration. To make yourself eligible to appear in the May 2016 Examination you need to get yourself re-registered at the earliest. 

actualy my ipcc course expired in 2012 and and i left study in 2011 and i have completed all itt training and orientation course that time. so can any one tell me should i have go through again for all that course and which syllabus is eligible to me as i want to pursue again my study . and want to appear in may 2017. please advise me.