I had passed in first group of PE-2 and converted into IPCE and appeared in Exam under Unit Scheme. Appeared in Unit-8 scheme as per rule I have to pass in one sitting but could not pass. My query is my First group of PE-2 papers in which i had passed will be invalid or valid. Whether I have to apply for both group and re-appear in papers in which I have passed? What is the process to appear in May 2012 exam and in how many paper?