Problem:
Error 3154: The backup set holds a backup of a database other than the existing 'xx' database.
Solution:
USE master
RESTORE DATABASE CARGOMAX_SECURITY
FROM DISK = 'C:\Program Files\Microsoft SQL Server\MSSQL10.SQL2008\MSSQL\Backup\cargo_security20090720.bak'
WITH MOVE 'CARGOMAX_SECURITY' TO 'F:\Workspace\Wareholder\Project\DB\CARGOMAX_SECURITY.mdf',
MOVE 'CARGOMAX_SECURITY_log' TO 'F:\Workspace\Wareholder\Project\DB\CARGOMAX_SECURITY_log.ldf',
STATS = 10, REPLACE
GO