owner = this.get('Rectangle').copy()
owner.openInWorld().moveBy(pt(0,100))
owner.myEllipse = owner.submorphs[0]
owner.myEllipse.remove()
copy = owner.copy()
copy.openInWorld().moveBy(pt(0,100))
copy.addMorph(copy.myEllipse)
copy.remove(); owner.remove()