I developed a web site on 07.02.01 (367) and publish it on my development domain. domain1.com. now I want to transfer it to the client domain. I restore the database and the files and changed the portalalias table and change the domain1.com to domain2.com but it didn't work and give me

Violation of UNIQUE KEY constraint 'IX_PortalAlias'. Cannot insert duplicate key in object 'dbo.PortalAlias'. The duplicate key value is (default.aspx).
The statement has been terminated.

 but when I change the portalalias table to domain1.com the domain2.com works and forward to the domain1.com.