When you add drawings to the Batch Plot list, they are immediately downloaded to C:\Temp
However, while the files are being downloaded, a user cannot do any other operation in the vault and must therefore wait until the download has been completed until they can configure and then submit their plot job. Instead, the vault should only download the files after the user has submitted their job and this way, they can configure their plot job quickly and the download can happen in the background while they go back to work.
-Ryan