User blog comment:Ultimate Mega Gamer/Ultimate Mega Gamer's Weekly Thumbnail Contest/@comment-26449310-20160304141448/@comment-6380028-20160304144821

^Well, basically when you try to upload a image with the same file name, wikia will ask you if you want to rename your file or replace the current file. Brobuscus101 chose to replace it and all pages, comments, blogposts etc that uses that image will now be showing that newly replaced file.