Some of the 3D shapes of my model shrunk or disappeared, the files are imported in .JT. I moved some of the files from folder I do not know if that's what cause the problem, but still some of the files that I move didn't suffer any problem and some that I didn't move disappeared from the model, the shapes still exist in the treenode. In the attached picture you can see the shrunk shape at top right shrunk-shape.png.