Moved everything out of my "Trash" in "Media Library" back to "My collections" in "Media Library" everything showed back in my "Manage Kindle" page then I deleted 400 plus books from "Manage Kindle" page one at a time. After I was done I synced my Kindle and the books I didn't want in my "Archives" are gone. It's tedious but it works.
My Media Library link:
https://www.amazon.com/gp/ays?ie
I know a lot of people probably already know how to do this already. But I personally spent 3 days going through forums trying to find help and was getting no where. Good luck and Happy Reading.