Migrate all per-user and per-computer Windows Media Player settings (stored as XML in %appdata%\local\media player). The USMT plugin is used to migrate downlevel WMP plugins to their newer version's settings.
Migrates per-user Windows Address Book settings. Also creates a new registry entry for upgrade that is read by Windows Mail on first run by a user, which upgrades certain legacy Outlook Express address book settings. Does not migrate actual contact files, just the registry pointer to them in the user’s contacts shell folder. The Contacts folder is only migrated by migdocs.xml , not migusers.xml .