I wound up deleting over 3700 wpts to get a clean file. I deleted and purged all 3 units then reloaded on console turned other units on and let them load.
Better'n losin' all of 'em... That'd be a REAL bummer.
Did you happen to tell it to show the "community edits" to make all those additional way points show up if you are using Navionics?https://www.navionics.com/usa/charts/features/community-edits