1. After opening the CAD Education Edition and stamping the drawings, save the drawings as ××. Dxf file, and then close the drawing. When you close the drawing, you will be prompted "Last saved in DXF format, do you want to save in AutoCAD drawing format?" , you can choose No.

2. Open the graph that you just saved as ××. Dxf format, and then save the drawing as xx. Dwg file again. When saving as ××. Dwg file, you will be prompted "××". Dwg already exists. Do you want to replace it? , select Yes, and then select Close.

3. Open the new XXX. Dwg file drawings, and then found that the stamp of the education version was gone.