Updating Mapsource:

  • Assuming you’ve just downloaded up-to-date tiles from a 3rd party, and that these have the same file names as the older versions, and that you’ve also got the new overview map tile and TDB file, you can just copy these new files on top of the old ones (with MapSource closed). Next time you use MapSource it will chunter on happily as if nothing happened, but with the new tiles. This is how I do it (but I generate my tiles with mkgmap, rather than downloading them).
    Combining areas:
    MapSource pull-down options are controlled by the Family ID and Series Name of the particular mapset. If you’ve got multiple areas with different Family IDs and series names, they will list as separate pull-downs. The only way to list them as a single pull down would be to re-build the tiles to all have the same Family ID and series name.