I made a mess with the export

Hi, new user here. When I heard of this site I instantly fall in love, and exported my Goodreads library. Nothing happened. No books where exported. So I exported again, clicking all tags and libraries. Now all the books, of all libraries, have all tags. How can I fix this?
https://www.librarything.com/catalog/Pxan02 my profile
https://www.goodreads.com/review/list/101700504?ref=nav_mybooks my goodreads profile

You are the only one who can change the collections of your own books. The fastest way will be to use Power Edit (the lightning icon on the catalog page) - it will allow you to change multiple books at the same time and remove the collections the books do not belong to.

Alternatively, you can delete all the books (same menu for doing it in bulk) and redo the import (with a proper export now if you know what went wrong).

Up to you.

>2 AnnieMod: Thanks. It worked. Now my library is fixed.