For repetitive conversions, the drawing files that you select for conversion can be saved to a list, called a batch control list. 
- Click Application button Save As Save As DWG Convert. DWG Convert.
- In the DWG Convert dialog box, near the bottom, click the Add File button. 
- In the Select File dialog box, navigate to the folder of the drawing file that you want to convert. 
- Click the drawing file name and click Open. 
- Repeat steps 2-4 for each drawing file to be added. 
- In the DWG Convert dialog box, click Save List. 
- In the Save Conversion List dialog box, enter a file name for the batch conversion list (BCL) file. Click Save. 
- In the DWG Convert dialog box, click Close.