[Serusers] ACC&redirection question

Hi All, I'm presently working on a SER v. 0.8.14 with Postgres db module for accounting purposes. There is one inconvenience we discovered while working with failure_route feature. In case when the call is handled by Cisco_A we have INVITE,ACK,BYE messages stored in db which is good. The problem is when the call is redirected from Cisco_A to Cisco_B we get only BYE. Awcourse following the ngrep it appears that the redirection is created by using INVITE, ...., BYE. The question is why i cannot obtain full information about the call stages in db in case of redirection. Is there anything which has to be added into config file. Regards. Pawel.