Duplicated saved locations

I notice for whatever reason my saved locations, some of them at least, seem to get duplicated on the watch...

Then suddenly I have 5 copies of the same location, no clue how and why. I just deleted them again, but does anyone recognize this or have any clue?

I don't use basecamp, or garmin explore... SImply garmin express on the computer and connect + connectiq on the phone.