Hey, probably you'll get more response for this sort of thing in the edge forum - this is asking for new features in garmin connect.
Anyway:
Exporting a Route to GPS Device
The Garmin Edge 800/810/1000 will accept either TCX or GPX files.
GPX files are best if you have base maps installed because it will display both a styled map and text-based directions.
TCX files are best when you don't have base maps installed.
Download TCX Download GPX
How to transfer the route to your device
Save the GPX or TCX file to your computer.
Plug the Edge 800/810/1000 in to your computer. Once connected, it is recognized as a USB drive.
Open the "Garmin" folder in that drive.
Find the folder labeled, "NewFiles". Move your downloaded TCX or GPX file there.
Once the file has transferred, you can disconnect your Garmin.
Now turn on your Garmin 800/810/1000. The route should be available in Courses on the device.
Source: I clicked export on the link you posted :D
