I have a 66i which I use with a subscription and was my first GPS device. I got a 67i about 12 months ago to use for trail camera research. Every time I sync either one to my phone it re-duplicates waypoints that are already in folders. I constantly have 200+ "uncategorized" waypoints even after deleting them. It's growing extremely frustrating having 3 or 4 pins in the exact same spot. HELP me, please!