Goodreads Librarians Group discussion

In this request I'm working on https://www.goodreads.com/topic/show/... the author has requested that the anthology where the novella 2.5 was published in originally be removed from the series [it says book 3 incorrectly, they have created a book record the book will be published on its own on amazon]. I know that such additions to series [anthology] are allowed but the author wants it removed. Can this be done or is it against the rules?