Upgrading SSIS Packages
When you upgrade an instance of SQL Server 2005, 2008, or 2008 R2 to SQL Server 2012, the new SQL Server 2012 SSIS files, service, and tools are installed, and your SSIS packages are moved into the new system catalogs, but your existing SQL Server Integration Services packages are not automatically upgraded to the package format that SQL Server 2012 Integration Services uses. You have to manually upgrade your SSIS packages created in prior versions.
There are multiple methods to upgrade SQL Server packages from SQL Server 2005/2008. Some of the methods are only temporary. For others, the upgrade is permanent. Table 9.2 lists each of the upgrade methods and whether the upgrade is temporary or permanent.
TABLE 9.2 SSIS ...
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