Hi Ziggy -

No - you can delete those files. It won't cause any issues. Your original videos aren't affected.

The Shadow Edit files are in your PD11 Output folder.

Cheers - Tony
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thanks Tony.

Quote Hi,

I had this option enabled, I disabled it now, ut if I go in and delete them, does it affect any project that used them? and how? The are taking 22 gb of space right now.

What about all the edits I did to the files in PowerDirector

All edit work, transitions, color grading ect.ect are preserved in the project files. As long as you have the project files, and have the original files that you used to make the project, you are fine. Better is to pack the project in a folder. PD will then make sure that both the project file and ALL basic files are copied to that folder, so that you always go back to what you did. Store that folder in a save place.
the shadow files are only files at lower resolution that help a swift editing process. When you delete them ( in so much GB you have, I certainly recommend that you delete them) and open a project that uses the deleted shadow files, PD will automatically make them again.
so never delete or change the original files and the project file......