Did that too. Import into folder. It goes in. When I import the 2nd one, the first disappears....completely.
Here is the latest from Garmin- this AM.
Dear David Major,
Thank you for contacting Garmin International.
Google Earth KML files are really just containers and can contain many different types of data depending how and when the data was created.
I also could not directly open 2 out of the 3 files.
While Garmin does not directly support 3rd party data and software or personal data, we can give suggestions.
I would use 3rd party software to covert the KML file to a GPX file. Then try and open it in Basecamp.
There are likely 100's of methods to manipulate data, however, here is one site>
You can upload a kml and output a gpx. When done try and open the gpx file in Basecamp.
If this does not work, you will want to go back to the source of the data and request a .gpx route file that will work directly with your Zumo.
With Best Regards,
Customer Care - Automotive Team