Make sure you have a 100% completed and working backup of your currently working forums (files and databases). If needed, you can revert back to your previously working version and start over again
From your Admin Control Panel (admincp/ by default), select Import > > Import.
Select the system you wish to import from the list and click on the button to confirm your choice and start the import procedure.
|001 - Check and Update Database||This module will check and alter the tables in the databases as well as the connections. After clicking on the button it check the database for the tables it expects to find, you should see a green list of you source database tables, and tables listed in red are expected by the importer and missing, you import may still run as not all tables are used during an import, though if critical tables (i.e. the user table) are missing then this will break an import.|
ImpEx will Alter the tables in the vB database (target) to include import id numbers. (This is needed during the import process for maintaining references between the tables during an import.)
If you have large tables (i.e. lots of posts) this can take some time. They will also be left after the import if you need to link back to the original vBulletin userid.
|002 - Associate users||You only need to run this module if you have users existing in the vBulletin database that you wish to merge with users in the source database during the import that have different email addresses. If you are doing a clean import then skip this module.|
To start the import click on the button and when that module has been completed, the statistics will update and the name of the button will change.