2 versions of Slaughterhouse-five

[Simon]

Slaughterhouse-five is listed twice in Vonnegut's list of works, they don't appear to be two different books, and they have different number of ratings. First one: https://www.goodreads.com/book/show/4...

Second one:
https://www.goodreads.com/book/show/1...

Is there a difference between both? Am I missing something?

[Abcdarian]

Combined.

[Simon]

They still don't appear to be combined.

[Arenda]

That sometimes happens. I've tried again and they are combined now.