I observe the general misconception of " *.gpx being a universal/global standard "...
Not quite, as every provider, programmer and manufacturer adds and alters "his/her" *.gpx with additional data; routing info, road classes, average speed info, etc...
And then you've the issue that all work with different map-set/projections, where way-point positions and road layouts differ... (thus always check/recalculate on your map-plotter prior transfer...)
ST1100Y has a good point. GPX is a file extension and what constitutes a GPX file is ...like the Pirate's Code...a suggestion.Apparently, Garmin recalculates the route unless you create tracks. I used the tracks conversion feature on the Garmin, but since I didn't create tracks, it recalculated based on start and end.
And now you understand why I program my routes in the GPS itself instead of transferring them from something else. I've used Kurviger in the past. I like it very much. But even with as simple as it makes to create a route or a track...it is easier not to deal with the variances of how each program or device treats routes/tracks.
I hesitate on letting my GPS recalculate the route. From Brave's search results:
Key routing options and management techniques include:
- Routing Preferences: Select Faster Time (default), Shorter Distance, or Adventurous (prefers curvy roads and hills) via the Trip Planner or Route Planner.
- Avoidances: Configure preferences for toll roads, tolls and fees, environmental zones, and unpaved roads in the Navigation Settings, though these may not transfer from imported GPX files.
The point being that if I want the same results in the computer program as within the GPS itself, the routing preferences must be the same, and the avoidances too. For instance, let's say I use Basecamp to plan my route with the default "Faster Time" route preference. And my GPS is set to the same routing preference -- but I have in my Avoidances to avoid "Highways" ...I'll get a different route.
Each program defines "route" and "track" and "shaping points" it seems differently. I would pick one, and then stick with it till you work out what works and what doesn't for you.
Chris