We get numerous requests asking if other Garmin maps can be merged to TRAX maps . Some of the common examples include wanting Garmin City Navigator maps on a handheld along with the TRAX maps. Kirsch’s Outdoor Products does not claim compatibility with any additional Garmin map sets. Also, it is highly recommended you do not write any additional mapsets to your TRAX card. This is due to the fact that Garmin maps do not merge, they overwrite, so you may be in danger of overwriting your existing TRAX map.
In addition, if you write other maps to our card (assuming there is room) and run the update process, all Garmin maps will be removed from the card.