@galaxis
The problem is not with GMapTool or with the software it uses to split the map for MS, e.g. cGPSmapper. It's that the Garmin NT IMG format cannot be fully reverse-engineered to make installable data which is fully functional. The real problem is that search feature is compromised because some data in the IMG cannot be used during the reverse-engineering. Read this:
Code:
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To get full functionality in either MapSource or BaseCamp (or in MapInstall if you wish to make smaller IMG files than your gmapsupp.img for use in a device) you should find an unlocked .GMAP folder for NA and work with that. Note that .GMAP data is sometimes referred to as a PC Install Version or Map Source Version. Also note that BaseCamp, but not MapSource, can see and use to some extent a locked or unlocked IMG file in a device, on a media card/usb stick or virtual drive on the PC.