title: jquery-ui sortable connected lists - dropping on an empty list
body: <p>I'm using jQuery UI's sortable to drag elements between multiple lists. An example:</p>
  
  <p><a href="http://jsfiddle.net/M4UY4/1/" rel="nofollow">http://jsfiddle.net/M4UY4/1/</a></p>
  
  <p>The JS:</p>
  
  <pre><code>$(function() {
  $('.sortable').sortable({
      connectWith: ".sortable"
  }).disableSelection();
  </code></pre>
  
  <p>});</p>
  
  <p>There are two simple lists. When I drag all the elements from listA to listB (or vice-versa), listA is destroyed and I can't drop back items from listB to listA. Is it possible to retain a list even if all items have been dragged and dropped out of it?</p>