Hi, I have just started using the software on the PC, not on the GPS yet. I created a route on my activated part of the OS Explorer map, but I seemed to get a few copies of the same route. I deleted the extra routes, leaving just the one route, but there are hundreds of waypoints in the overlay objects list that don't relate to anything. My route has waypoints WP0301 to WP0399 and then WP03100 to WP03192, but there are also 8 or 9 copies of WP01 thru WP99 and of WP0001 thru WP0099 and various other series of numbers. There seems to be no way to multiple select them. Why are they there and how can I get rid of them?

Easiest way to block edit the data would be to export the overlay data to a comma separated value (csv) and edit it in a spreadsheet program. Save edited version, keep as a csv. Delete all overlays from Memory Map then import the edited csv version.

Right click the waypoints sub-group, choose delete. This will delete all unused & unlocked waypoints.