If System Center Data Protection Manager 2010 (DPM 2010) backs up a Sharepoint 2010 site and then site has it's name changed, DPM 2010 will be unable to recover the site. The renamed site will be treated as a List instead of a site.
This is a known issue in System Center Data Protection Manager 2010.
This issue is resolved in Hotfix Rollup Package 7 for System Center Data Protection Manager 2010. For more information see the following: