The crew at PressBooks asked me to customize the standard WordPress importer to behave a little differently: instead of immediately publishing the stuff from the old blog, they wanted to put the imported content into a queue and let the user select where it should go: their book’s front matter, the main chapters, or the back matter (which PressBooks has set up as custom post types). The tricky part here was adding a new bulk action — custom bulk actions aren’t supported in WordPress!
