text: so - it´s time to close the error ;) ...
  
  i´m updating all pt-routes in Salzburg, so i did lot´s  of study. The northern platform ist just used by "Postbus" - no trolleybus and no "Albus" (=local busservice) stops there. This stop is just for regionalbus like as line 180 or 260.
  
  The platform/stops of "Gaswerkgasse" is a bit complex - i made an own relation. All others were used by trolleybus and citybus - just the marked one is used by "Postbus".