BOYDSMAPS

Use the GPX format to exchange data with apps such as Garmin Basecamp, but Garmin doesn't support custom data fields. Use the boydsmaps format to backup all your data or transfer it to another device. It is saved in a tab-delimited text file that can be imported into spreadsheet and database apps... GPX files are compatible with Garmin's devices and software. GPX files may also contain tracks and routes, which may cause problems. We recommend that you only import GPX files containing waypoints.