In the dialog box, select the desired older version (e.g., AutoCAD 2013, 2010, or 2007) from the drop-down menu. Click Save .

Converting DWG files to an older version is a common necessity for CAD professionals who need to share designs with collaborators using legacy software. Because the DWG format evolves over time , newer versions often cannot be opened by older software, creating a "compatibility wall". How to Convert DWG Files Using AutoCAD

If you have AutoCAD installed, you can easily downgrade a file using these two methods: : Open the drawing in your current version of AutoCAD.

Type SAVEAS in the command line or click the in the top-left corner.

:To avoid manual conversion for every file, you can set a default older version for all future saves: Right-click on the screen and select Options . Navigate to the Open and Save tab.