[Plugin: BP-FBConnect] Reclaim existing blogs/userid for facebook user

With this plugin installed, how do I move the existing user / posts to the same user but with new registration by Facebook Connect? I’m using bbpress /buddypress integration — so not sure if deleting the old userid will transfer all blogs post; as well as bp data & bbpress posts data?

Any ideas? Thanks

https://www.ads-software.com/extend/plugins/bp-fbconnect/