ActionScript 3.0 :: Nested Coordinate Systems / How Do They Work?

I'm creating an interactive map in Flash. The stage size is 800 x 600. To this stage I am adding a large (zoomed-in) map in which I want to display many points. The large map is 4000 x 3000. This map is adding correctly but I experience trouble when I try to add the points to the map. I want to add these points directly onto this large map and I want them to move with it when it pans. Unfortunately, when I add the points their coordinates are read relative to the stage rather than relative to the large map MovieClip. The complication is that the large map is added to the stage at a different location dependent on where the smaller map is clicked by the user.The Question: How do I get flash to add these points relative to the large map's coordinate system rather than the stage's?

What I have tried: globalToLocal/ localToGlobal functions are fine for tracing but don't seem to give me a useable result Setting the coordinates of a Point to the result of this function to give the local origin obviously doesn't work.[code]