You can extract migration files from your existing messaging
system using the two-step
migration process. After you create a set of migration
files—a packing list file (*.pkl) and multiple primary (*.pri) and
secondary (*.sec) files—you can use Migration Wizard again to
import these files to Exchange.
With the exception of migrating from Microsoft Mail, all
migration files are imported the same way, regardless of the system
they come from. Before you begin, map a drive letter or connect to
the server on which the migration files are stored.
Tip For best performance, move
the migration files to the hard disk of the computer running
To import migration files (except Microsoft Mail):
On the Start menu, point to
Programs, point to Microsoft Exchange, and then click
Read the informational text, and then click Next.
Select Import from Migration Files, click Next,
and then follow the wizard's directions.
You need to select the name of the Exchange server, mailbox or
public folder store, and Active Directory organizational
unit (or container)
that you want to migrate the data to, and you need to specify a
path to the migration files. If public folder data is found, you
also need to select the access permissions and account