The only reason I deleted history was to get rid of seams because of split up meshes... I had rigged 28 models.... GRRRRRRRRRRRRRRRRRRRRRRRRRR!!!!!!!!!!!!!!!! So frustrated right now. I didn't know it would delete skin weights. A weeks worth of work, gone. Would delete all by type NONDeformer History have cleared FBX export normals? Because that was my reason, because the normals would export wrong until I deleted history.