Ferdo, I generate CATPart in GSD. Then I use command Save as DXF. Next step: open generated dxf file (after command Save as DXF) and create Text box with some information (material, thickness etc) and I save it again like dxf. So, if I change original CATPart (Generative Sheetmetal Design), I mean about dimensions-example, and after that when I open exist dxf, I expect to сее new contour with old text box with old informations. But that doesn't happen. I mean, in this case doesn`t links between CATPart and dxf file (somthing like between CATPart and CATDrawing). Why?