The Current Menu Bar edit GUI is cumbersome and difficult to use when there is more then a page height worth of menu items.
The click and drag mechanic is painful to get a item from the bottom
I have a workaround, stick a number on the front of the new menu item, then it appears at the top. You can drag it across and then edit the name to whatever you want. I always stick an 'A' on the front of my dashboards so they always appear near the top then I don't have to go digging.