Watch video (http://screencast.com/t/2XdA3Fz7). When you order more than 2 copies and you add an item at the time of ordering, the third, forth, etc are all going in at the second spot instead of at the bottom, making you scroll up to see the new item you've added.
Adding items in acquisitions has changed a lot since the screencast was recorded. Instead of stacking the item forms we now have a table on top and only one item form is shown.