@ian-street Which .gpx format to use seems very dependent on the device to be used. I haven’t a clue how yours might treat .gpx1.0 (my 390 was designed to use this despite 1.1 being current at the time???). In theory, from what little I’ve read about them, I think the formats ‘should’ be backwards compatible, in that devices intended to use later versions can use earlier ones. But somehow… This is Garmin we’re talking about! Give it a go, you won’t do any damage, but might get an error message or odd looking route!