Secondary issues noted At some point in the conversion soiree, my table names became all lowercase.
If your prod server database is case sensitive (which is default mysql lower_case_table_names value for linux systems), you will need to change each table name to uppercase. e.g. ubb_users becomes ubb_USERS. This took about 15 minutes to do manually in phpmyadmin.
Additional forum settings fix: All users were imported as Moderators.
This is a known bug and requires db manipulation or manually fixing each user in the Control Panel.
