I've managed to convert some tracks and make them into a custom map, but I can't figure out why the feature type is always a generic black line in MapSource. I import a couple of GPX tracks into GlobalMapper. I then change the feature type to experiment, for example Stream, Major Highway, Railroad etc. I export the shapefile and create a custom map out of it but when I view it in MapSource it shows only a thin black line for each track. I've been reading the Global Mapper manual but apparently I'm missing something. Any idea why the feature types won't stick?