[Jason Giedymin]

You don’t have to define them all, in the settings.php if it’s not defined they get created for you in some respects for some of them. This will help you during integration.

In fact anytime you use these defines you are saying to bbpress that the value your defining will manually override anything in the DB.

A goal to have during integration is to try and let the apps do the most work. This way human error can be eliminated. Now there are always exceptions but on a ‘basic’ setup. So again, avoid defines unless otherwise specifically told to (say by the integration plugin or bbpress integration settings).