Like my title states, when i am in game in my map, things are disapearing. A few examples are waterfalls. Whenever i put a waterfall in my map and go ingame on my charrie and look for it, its gone. Same with the cave (with the overhanging entrance like in the plains), Elephant skull and ribs, Campfire (downloaded mesh) and a few other meshes... This is so annoying!!! does anyone know what the problem could be and how to possibly fix it?