Starting GMDL, clicking on POI, i obtain a screen with various button among these: "_POI file", "KML file", "CSV file", and "OV" file". Clicking on ov2 file, will pop up a window to search *.ov2 files. I choose one and then on GMDL i have the complete list of POIs. Clicking on button "Save POI (start with _)" i can save a file perfectly compatible with Map This!.
Just tested, very easy and fast.
Regards.