TestLink

Is it possible to archive test projects or test cases such that data created in 2010 is stored somewhere while testlink website will only holds data in 2011?

I know one method will be to backup the current database and creates a new database. is there a way to have them all in one database? or even other ways?

And how to archive a particular test project in database?

Thanks in advance for any solutions and suggestions! (:

Archive is not possible