"Dark Sanctuary" is the first Dark World, "Dark Sanctuaries" is the fan term we use on the wiki to refer to all three; the category is for articles about things located in the latter.
I was going to manually move the page and edit all the pages to change the category, but a majority of the pages seem to have the Category:Dark Sanctuary category "invisible" (it's not there in the source code despite being visible when viewing), so I reverted the move.
I assume only a moderator would be able to change the category on all those pages.
We usually have categories for sublocations, not whole locations. But the Dark Sanctuaries have a lot of the same stuff in them, so I think it makes sense to have just one "Dark Sanctuaries" category for them.
It's the infoboxes templates that add location categories to pages.
Yes I agree. I thought of making categories for the 2nd and 3rd Sanctuaries, but I came to the same conclusion as you.
The current issue is just that having a category named "Category:Dark Sanctuary" include stuff like the Titan is clearly wrong; the category's page even says it's about stuff in the Dark Sanctuaries. It needs to be moved.
It's done. It might take a while for everything to update.
Thank you for moving it. I wonder what I was missing, since when I moved it, all the pages listed under the old category didn't move to the new one. (That could've been because I made the old category a redirect, but even when you don't click on that box, you are given a warning stating "Please note that only the page will be moved and any pages in the old category will not be recategorized into the new one.")
It is what I said. The infobox templates added the location categories to pages. I edited https://deltarune.wiki/w/Module:Infobox/data to say "Dark Sanctuaries" instead of "Dark Sanctuary".
Ok, that's what I missed. (I misunderstood what you meant when you said that in the earlier comment), Thanks.