Thread: How to stop duplicated waypoints

How do I stop duplicating the same waypoints. I know how to export and import all waypoints on my hummingbird units with the SC cards but then I have to manually delete the duplicated waypoints that were already on my units that were duplicated. How do I just import and export the new ones.

Export All (new and old) data from unit to sd card and pull card out. Then delete all on unit. You will be starting fresh every time. Just remember to make a back up of ALL your data.