Mid-hierarchy Concept Swaps

I have seen several situations where an entire subtree is built, with lots of children under a given concept, and then it's decided that all those children should migrate to a different parent. Conceptually, one may want to say "take all the subtrees of the concept I've selected, and paste them all in under some other node." Right now, such an operation is time-consuming since only one of the subtrees can be selected for cutting and pasting at a time. (This is one among many of the ways that Knowledge Manager tacitly assumes that an author will do things right the first time.)

A simplified version would be to let the user select a node, then some other concept, and say "swap this concept with the selected node" by clicking a button. This is a little bit more limited but might take care of the majority of the real-world needs with a relatively easy feature.