Re: migrate back to a localhost.localdomain setup
WPMU has real issue with trying to change data back and forth through the database directly. That is where you will either have to do multiple “search and replace” in the database (scary) or simply just use the standard WP export and import files to move data back and forth (safe). Since there is no “export/import” for buddypress, the only way to do it is search and replace the database files URL. So, there is no easy way to move data around at this point. Maybe a suggestion for future releases since it would be nice for even members to move their data if they change for host to host.