You can load (import) waypoints from different usr files from the memory card. However,this will merge with existing waypoints in the core memory. What I do is delete the core memory (delete all) before I import a new file from the memory. Sometimes I let them merge. You can also purge existing waypoints with the purge feature. I have 10 different .usr files at present on my memory card. I delete all the existing waypoints from core memory and import from memory card my desired location waypoints. Good tools.
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