The Stereo Map displays the orientation of the images in reference to the sensor. We have some frame images where north is on the bottom, therefore the image upside down. There is a workaround for this: link Stereo Map and Map. In our case (frame images) this has the effect that the map also displays upside down. It would be much better if both Map and Stereo Map display north up!
--> So there should be a button "North Up" for stereo images