[Freeswitch-users] CDR problem with att_xfer

I am using att_xfer for conversation between A, B, C A calls B, B calls C then B press 0 to create conference. There is 3 CDR record as expected but if C answer the call then all 3 CID_name is "Outbound Call" and All 3 "CID_number" is C's number however if C dont answer the call then all 3 records are just showing fine. So anyone can explain this behavior..!