I've used Test Agent nbms that were created by Vince on 01/11.
I've removed a Contact header from the BYE request. Then I've tried to
generate other new requests. All of them, by default, did not have the Contact
header, but originally these requests, by default, had the Contact header. I
believe that the removing of a header from one request should not affect other
requests. Cancel, Reset did not help, only when I've restarted Test Agent, this