Is there a way to move multiple classes and interfaces into a package in one shot?  I've tried selecting various elements in a diagram and changing the namespace, but only the first selected object is moved.  If I try to drag them around in the explorer, there are too many elements between my starting point and my destination, and after dragging the elements towards my destination the explorer refuses to scroll further.  I know I can create a package stick it on the diagram, put the classes in it, but then I'm stuck with a package in my diagram.

Is there some other approach to doing this that I'm not aware of?