Location of generating Neutral Files
By default, the neutral files are created in the same model file location (or)
        <PLM_Client>\AutoCAD\NeutralFiles folder . However, you can change
      the folder location by specifying the new folder path in the environment variable as shown
      below:
    
    If you set the environment variables as shown above (PLM_AC_NEUTRAL_FILES_DIR), the neutral files are created in H:\PLM_SW_NF_DIR. Ensure that no other files are manually created in the folder, because the folder is cleaned when you close AutoCAD.