Howdy, I recently addressed most of the issues from this post, Can’t move pages out from under their parents, but I still can’t reorder pages. The initial problem has not been addressed; I am still encountering the problem with reordering pages and their URL’s:
I have a couple of pages that I decided to make top-level pages in my menu. I manually changed this in the menu, but I am unable to reorder it when I edit the page. Consequently, my page slug still shows <parent-name/page> instead of just <page>. I set it to “no parent page,” and it looks fine, but after I click update, the page is back where it was before I tried to edit it.
Do you get the same issue when using any of the default WordPress themes like twentyfourteen?
Unfortunately, we can’t help with this issue because is not theme-related (you said the issue persisted even with the default WP theme), however this plugin may help you: http://wordpress.org/plugins/cms-tree-page-view/