Asuume you have a series of photos and a gps track. Perhaps, the capture times of the photos extends beyond the end of the gps track. You plot the gps logs and see that only, say 100 of 150 photos have matched coordinates. You check the first few photos and the map indicates their position properly. You jump to the last photo but the map still shows a marker even though even though it has no matched coorinates. The marker should disappear from the map if there arre no matched coordinates; I pay attention to the map, not the numerical coordinates and if I see a marker, I assume all is well.
PM version 5.0, build 18327 on Windows 7 Home premim with service pack 1.