Moves the weight values of selected vertices from their current influence(s) to selected influence(s).
The first selected influence acts as the source influence and all other selected influences act as targets. If an influence is locked in the Paint Skin Weights Tool, it does not receive weights when you move weights from neighboring influences.
This menu item is also available as a button 
in the Paint Skin Weights Tool. See Move weights and Move weights to other influences for more information.