I recently started working with a client who has over 400 pages on their WP site (yes, pages, not posts). Their menu needs to be redone, so I decided to go the 'custom menus' route. However, not more than a third of the pages are available to select from the 'Pages' meta box on the Menus page. And 'search' does not seem to work (typing in the page title even of pages that do show in the box results in 'No results found' message.
What's up with this? And how do I solve it?