What about Overlord_Manga#List_of_Chapters_and_Volumes and those retrieved edits? Is there something wrong with this? From volume 1 to volume 7 there is supplementary chapters in tables, why undo this in volume 9 and 10? And about volume 12 - why undo to wrong link? As I said in the commentary to my last edit, "That is Butler's stroll, and this is part of ch44 from magazine." In the vol 12 tankoubon chapter 44.5 is a last part of chapter 44 from magazine. In the tankoubon version of chapter 44 there no that part in there.
So, this and this are okay?
And about broken link: I'm not sure how to do this properly, can you help? As I mentioned before, present situation is wrong, because a link to the chapter 44.5 leads on the incorrect chapter.