While many don't take care in the exact words, do review http://aumha.org/win5/a/fast.php to see if you find your answer.
For me, it copies...
Has anybody ever used this wizard ?
The documentation clearly suggests that data is MOVED or TRANSFERRED, which would surely leave the original computer partly trashed. Does that happen or is the relevant data only COPIED (to the other computer or to a disk / disgo), leaving the original computer untouched ?