Julie on 06 Dec, 2021 11:16 PM
Can you give me a little more information please. You are exporting them from CalTopo and then opening the files in some other program or device? Which program/device? Can you send us an example file please?
Meghan on 07 Dec, 2021 04:42 PM
A GPX file doesn't really have a notion of a polygon- that is why when you export a polygon as a GPX and then import it back into the program, it imports as a line and not a polygon. If you want to keep the polygon geometry (including the fill) intact, then you'll have to export the data as either a KML or GeoJSON.