Geocache update. Losing coordinates on waypoints.

1) Go to a geocache with waypoints

2) Select a waypoint without coordinates (N0°0.0 E0°0.0) and change it`s coordinates.

3) Display the waypoint on screen

4) Exit the geocache and choose `Update cache`

5) Now go the geocache and check the waypoint you edited.

6) The coordinates are again set to N0°0.0 E0°0.0

I understand that you overwrite the coordinates of waypoints in case they are set, but when they are zero, they shouldn`t be overwritten, IMHO.

PS: Notice that the original waypoint is still visible on screen, but not available anymore in the geocache.