Conversion from ipc old syllabus to new syllabus completed group 1 had exemption in Costing(CFM)

I want to convert from ipc old syllabus to new syllabus, I heard that if we have exemption in costing & financial management (CFM) in old syllabus group-1 , we get exemption in FM group-2 new syllabus. is it right? is there any condition for getting this exemption? I completed my group-1 two years back( i.e. I gave 4 attempts for group -2 )