[John James Jacoby]

I’m able to integrate WP2.8 and BBP1.0 without this.

The settings put out by the Integration plugin are not REQUIREMENTS, they are RECOMMENDED. Basically automated guesses based on your wordpress/bbpress configuration. I can’t say I’ve integrated any two sites in the exact same way, as the cookie and domain setups are almost always different between installs, so it requires some trial and error to get them lined up.