Edit Waypoint Coordinates on the Web

Ok so I know I can enter coordinates in the search box on the web and then save a waypoint.  That's fine but why in the heck can't I edit the coordinates on an existing waypoint.  This is such a basic mapping feature that it makes no sense it can't be done.  It also makes no sense that you can edit waypoint coordinates on the mobile app but not on the web.  Please fix this.