It sounds like it could be a simple mistake in the selection of the direction and or offset check boxes for the GoAround. When you created the tool path for the GoAround there is a dialogue box which has check boxes (Direction)Forward & Reverse, and (Offset) Left, Right, and None. You may have selected the Direction and or Offset inappropriately for the cut. You should be able to correct this situation by visualizing the tool positon relative to the path so that the direction and offset create the toolpath you want. The simulation should show the cutter on the correct side of the path line and the correct direction of travel.