You can select specific .idw files, .idw files in a folder including subfolders, referenced by an assembly in a non vault Autodesk Inventor project. 
Before You Begin
- Back up the .idw files you want to convert to Inventor .dwg. 
- To access files stored on a server, you can map the network drive locally or user UNC path directly. 
- Verify that your files resolve and open correctly in the existing version of Inventor. Repair resolution and general problems before you proceed. 
- Close all versions of Inventor. 
Convert IDW to DWG 
-   In the Inventor Task Scheduler window, click Convert IDW to DWG  . .The information in the task list switches to show any Convert IDW to DWG tasks you saved previously.  
- In the Inventor Task Scheduler window, right-click, and select Create Task  Convert IDW to DWG. Convert IDW to DWG.
- (not available in Inventor LT) In the Convert IDW to DWG dialog box, in Project, specify the active non vault project. The files are converted from the local hard drive. 
- Click Add Files, Add Folder, or Add Project. - If you select Add Folder, your selection includes the folder’s Inventor files and their dependencies. To include subfolders, click the Recursive column. 
- If you select Add Project, you convert all the legacy files within the project you specify. 
 
- In the Output Folder and Output File Name columns, you can change the default. You can click Browse in the box to browse to a folder or file. 
- In the Task Properties box, enter a task name and a time-out threshold. 
- Specify a schedule, or select the Immediately option. 
- Click OK. 
The log file reflects the success or problems in the conversion.