my Bsp brushes are broken

Hi when i was making my level, i went away to watch a movie without closing, saving or changing anything. when i came back some of my additive brushes were invisible and were acting more like a subtractive box and the subtractive brushes are half addititve and half subtractive

can you put up some screenshots

Also if its all BSP u might want to try converting to static mesh.

Easy as 1 2 3