title: Data virtualization and sorting, with editing and validation
body: <p>Are there any solutions out there for sorting with data virtualization? The use case is a large set 
  of transactions sorted in any of several ways. Editing a transaction puts it out of order, saving it may move the transaction to a different page. By itself that is not so bad, however (a) it has to work with a validation system and (b) other entries can be added or edited prior to the save, resulting in an increasingly disordered list. </p>
  
  <p>One solution that I think wouldn't work very well would be to resort each dirty page (e.g. right after the save)I because that would significantly increase the number of entries notified to the list view, resulting in flicker. </p>