Accidentally added work to series

Hello! I seem to have accidentally added a book (work?) to a series, and can't figure out how to fix my mistake.
The series is in English, but my copy of the book is Swedish.
Series: https://www.librarything.com/nseries/195/Diary-of-a-Wimpy-Kid
My book is the last one - listed as På ny kula.
What I really wanted to do was simply assign to my book (https://www.librarything.com/work/26325724) that it is book 14 of this series, in English called Wrecking Ball.

Can someone fix this for me, or tell me what to do?
Thank you!

What you wanted to do was combine the two works, which I have now done for you.