Just wondering if anyone has implemented Undo/Redo history at the business object level. Right now we can Undo changes since the last save, however I have a requirment to keep track of all changes since the last save operation and allow users to undo them one at at time (and Redo them as well), until you save or Undo All changes.

Any idea's on how you would go about doing this?

Thanks,
Tim