Board Thread:Support Requests - Getting Technical/@comment-30339180-20190922175244/@comment-9605025-20190922234050

I believe the reason is that the Alternate History wiki is using a non-standard version of Templage:!. You can either copy their version over the one already on your wiki or you can add it as a separate template under a new name and then edit Template:NationInfo so that it calls the new template.

FYI, the "Add pages from category" takes a category name and auto-adds all the pages in that cateogry to the list of pages to be exported. You can read more about exporting here.