Ok, today my hands typed a script while looking at the clouds. Maybe it helps somebody. You can put the output (HTML) from Greenflag into a box, shake, and get the route for your empeg.
I don't know exactly if this is forbidden, so please tell me if it is, so it will be erased. But since I'm not copying some data myself it should be ok.
Look at http://empeg.rowi.net and click on GPSapp-converter.

Thank you very much for GPSapp, green.pl, convert.py, ...
I just put them together.

Rolf