Reputation change when killing argon ships in Circle of Labor

I am palaying X3 Albion Prelude(Steam), I started game as Terran Commander, and from start reputation with argon is very low (Enemy of Federation), every ship is hosile to me. Howewer where I destroyed argon ship in war sector (Circle of Labor), there was message "Argon federation thanks you for eliminating this thread". At this time i did not see reputation change in player info.

Question is: How reputation changes where you kill argon ship in Argon warzone? Is it possible to fix reputation with argon?