I am drawing crosshairs in a separate graphics layer and I want to be able to turn it on and off, but when I set the visibilty to off or remove all the graphics from the layer, the crosshairs are still their like they are burned into the map layer. The crosshairs don't refresh. It just stays in spot it was before I turned off the layer. When I turn the visibility back on the location is updated when I pan or touch on the map. I tried to invalidate the mapview, but did nothing.