gpk file clutter

Those gpk files are very annoying, they clutter up my folders. Is there anyway to make them disappear after the Wavelab closes? Or make them invisible, or have them directed to their own global folder? When I have to deliver my files to the mixer, I have to spend alot of time deleting them.

In the Audio File preferences, you have the option to put them in a separate global folder.

Is this possible with Wavelab Elements 7?
I looked and could not find where to do this.

Only in WaveLab.