[Freeswitch-users] SYSTEM_SHUTDOWN

I have one FS that set up similar to the others, but the weird thing about this one is that when I shutdown the FS when there are calls running, it never generated CDRs of those running calls before the system got shutdown while the other servers always generate those CDRs with hangup_cause SYSTEM_SHUTDOWN. What would be the reason for this particular server not to write the CDRs when it's shutting down like the other servers? By the way, I am using mod_cdr_csv. Thank you, Dorn B.