Hello, I confirmed that would be great. The main reason is that some garmin devices are not really compliant with garmin connect. For example, with my Dakota 20, I'm not able to create a course and upload it in my Dakota.
The only solution I found is to create it on Endomondo.com which has the features to export a course in a GPX file format. I'm sure you'll agree to say this is not consistant for garmin product !