During a user group meeting one of the user asked that If we were to migrate our databases over to the evaluation edition of SQL Server 2005, is there a way of upgrading to the purchased (licensed) version (before the 180 day expires) without uninstalling or stopping the converted migrated running or production 2005 databases. The easy option is 180-day trial version of SQL Server product allows the upgrade feature to the fully licensed version of SQL Server 2005 Enterprise Edition without uninstalling...(
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Read the complete post at http://sqlserver-qa.net/blogs/tools/archive/2007/08/31/problem-with-migrating-database-from-a-sql-server-evaluation-edition-to-a-purchased-version.aspx