I am creating a 3D electrical cabinet layout, I have already created the 2D layout in SolidWorks electrical schematic. I open the project in SolidWorks 3D from the electrical project manager, which is the cabinet. I insert the sub-assembly, which is the actual 3D chassis layout I created earlier. All seems fine, until at the end of the day I close the software, then open it again the next day, and