Re: Migrating Posts from BBPress to WordPress
There is a thread discussing export capabilities for bbPress, where the project “bbxf.org” is mentioned by chrishajer. Maybe you can ask him there, if the alpha version of the plugin they have on Google Code can be used for your purposes. That is, export bbPress as an XML file and import it into WordPress.
The alpha version can be also found on the site of one of the developers, Dan Larkin.
You could give it a try with a fresh “test” install of WP, and a full bbPress database backup…