Can end users return to Windows Vista Business, Vista Ultimate, Windows XP Professional, Windows Server 2003, or Windows Small Business Server 2003 software after they downgrade?
A. Yes. End users who downgrade may reinstall the original software when they are ready to migrate. For example, an end user who downgrades to Windows XP Professional may later return to Windows Vista Business software, provided that the end user deletes the Windows XP Professional software from the PC.