Scrapebox plugin for removing failed urls from a complete url file

Okey so used Scrapebox plugin Link Extractor for building my first private target list. I got on .txt file with failed urls and one .txt file with all urls, including the failed ones.I want to use the urls from failed-urls.txt and delete them from complete-url-list.txt so I only got worked ones left.You know a scrapebox plugin or other method for doing it?

Devart Code compare: http://www.devart.com/codecompare/

Just insert your full list in scrapebox and click "import url list - select the url lists to compare". Select the failed entries and you're done.

Thanks for those tips!