The app only shows Manhattan neighborhoods if you are actually in or around Manhattan when viewing your bookmarks list. It is the same for all cities for which we have neighborhood data. We're still researching an intuitive way to provide all the city and neighborhood subdivisions at once without making your bookmarks list unwieldy--we're open to any suggestions on how best to organize it!
Thanks for the suggestion, we'll look into it. To give us a bit more background, what do you want to do with your exported/printed bookmark list. Thanks!