I'm trying to help my buddy but I'm lost as to what if anything he can do to save his waypoints/routes. He has 2 units...788c & 788ci. He purchased the Interlink Network but didn't connect it until he had dowloaded all of his waypoints/routes onto a sd card. Then he erased everything from both units & connected the Interlink instructing it to start participating exchanging waypoints/routes w/both units...nada - nothing happened. Since he's never used sd cards, it turns out he mistakingly downloaded doubles and triples of all of his waypoints/routes. We tried to clear up the problem but couldn't. So he called Humminbird Support was told that he could correct the info on the sd card by connecting his card reader to his computer...insert the sd card & follow the steps Humminbird listed. By following the steps on the Humminbird website...his sd card could be corrected thru the Internet. I went online to Humminbird and have no idea as to what he's talking about. Does anybody know if you can clean up a sd card on the Internet thru Humminbird or has he lost all of his waypoints/routes?