This scenario is referred to as PC-refresh. One common scenario is when the operating system is upgraded on existing hardware without the hardware being replaced. Once these items are capture, they're reinstalled on a destination computer after the upgrade completes.
USMT manages the migration of an end-user's digital identity by capturing from a source computer the following user's items: The User State Migration Tool (USMT) can be used when hardware and/or operating system upgrades are planned for a large number of computers.