I bring this up because it's the link in the components node in BDD that refers to a patch for Offline Servicing for XP and 2003.  It has to do with servicing WIM files offline within XP and 2003, NOT offline servicing of XP and 2003 images. 

Link to When you use Windows Server 2003 or Windows XP to modify a Windows Vista registry hive, Windows Vista registry key flags are removed