WP Import Export : If your .htaccess file were writable, we could do this automatically, but it isn’t. So you must either make it writable or manually update your .htaccess with the mod_rewrite rules found under WP Settings >> Permalinks. Until then, the exported and imported files are not protected from direct access.
Version history
Only one revision of this notice has been captured so far. We'll diff it the moment the plugin ships a new wording.