It would be great to have some way to import Joomla content into the blogs. I've just migrated from Drupal and plan to use Blog Factory to replicate the user's blogs but I'll have to import the blog posts manually.
I second that. You can export (called, very poorly, import) BF articles to Joomla - of little to zero use IMHO, but no way to go the other way that I see - which would be ultimately more useful.