The metadata saying it as coming from wiki48 is just a secondary issue. The primary issue is that the uploads are dupes/duplicates. We already have a lot of images that are the same as the ones uploaded, and some are much higher quality than the ones recently uploaded.
Even if the images are from Stage48, I could just remedy it by overwriting by uploading a higher quality image later...the really infuriating part is being dupes/duplicates...it's a real pain to keep making redirects all the time, so I quit doing that recently...see, I have to repeat that, because it's important...
Please use images we already have. Also, I can see that the images you use is wrom Wiki48/Stage48, so I would like to ask that you mellow down on doing that.
Here's an example...if you can't find the image for Kimi no Hohoemi wo Yume ni Miru, we already have that one: Suzukake Nanchara. Like I've said in blog posts, discussions, chats, and forums, "we use a different way here". I'm gonna delete your duplicates soon, so please, try to "AVOID" directly copying Wiki48/Stage48 pages.