So I've been working on a shop drawing, and all the walls on the 2D floor plans, and even the cross sections look normal, but along the way my siding dissapeared? There's no steel siding material on my elevations or camera, and even on the camera view it only shows what looks like the OSB boards & the "Tyvek wrap". There's no framing components, vapour barrier or siding showing. What's going on? How do I fix this without completely re-drawing my walls? I've done so much work on it, it would be a mess to restart.