The editors at the company where I work have been working on a new content tree in Sitecore. First we cloned the Home-node to a NewHome node. This way they could rearrange the structure without changing the pulished one. Still they got updates that were applied to the Home node. When we went live with the new structure we wanted all the old search indexed pages to be redirected to the new page in the new structure. This is how we did it!