Sql Azure Sync Between different instances

“Cross-Server Copying
You can also copy a database between two different SQL Azure servers that are in the same sub-region or data center. Because the new database is created on a different SQL Azure server, it is associated with a different master database. All users in the new database maintain the permissions that they had in the source database. The security principal you use to copy the database becomes DBO on the new database when it is created and is assigned a new security identifier (SID). The following figure illustrates cross-server copying:”

references:
http://msdn.microsoft.com/en-us/library/windowsazure/ff951624.aspx
http://patrickyong.net/2011/10/14/sql-azure-data-sync-ctp-is-now-public/