Ok, so when i clone a barrel for example in the sandbox of Crysis 1 and i move that barrel in the air, then i press CTRL+G to get in-game trough the sandbox, that barrel remains in the air, until i get in contact with it. Why ? There is a setting to remove the gravity to all the objects when i modify them to not remain in the air ?

And i also have another one, when i select the tool, "select and scale" and if a scale the pontoon bridge for example, i make him larger, and in-game i am not able to walk on the pontoon scaled. I think it scales only "image" some how, not the whole texture solid, to walk on modified objects. That is for now, if anyone knows the answers i will be glad.