Hiding static Object and its shadows

Hello fellow Unrealers^^

I’ve got a big map with many positions on which players can spawn buildings. These buildings where pre-buildt and then the lightning was baked. They are not moveable because they are very detailed.

Now I want to hide all buildings and the baked shadows. If a player decides to spawn a base, the objects becomes visible with its pre-baked shadows. Another does the same with another Base and so on until 3 of 5 possible locations arevisible.

Is that possible?

Thanks very much and have a nice day.

if you have a building that casts shadows onto the terrain and you bake the shadows, what do you expect will happen (with the shadows on the terrain) if you hide the building?