public ActionResult Edit(Edition edition)
        {
            if (ModelState.IsValid)
            {
                //if entity is new, it will not pass through TransferFromTo() and we must attach the serials
                if(edition.IsTransient() && edition.Limited)
                        for (int i = 1; i <= edition.LimitedQty; i++)
                            edition.LimitedEditionSerials.Add(new LimitedEditionSerial { Edition = edition, Number = i });

                var artworkId = edition.Artwork.Id;
                edition.Artwork = _artworkRepository.Get(artworkId);
                var confirmation = _editionTasks.SaveOrUpdate(edition);
                if (confirmation.WasSuccessful)
                {
                    //edition may have been deleted, orphaning the serials.  Search and delete
                    var serialsToDelete = _limitedEditionSerialRepository.GetAll().GetToBeDeleted().ToList();
                    foreach(var item in serialsToDelete)
                    {
                        _limitedEditionSerialCudTasks.Delete(item.Id);
                    }
                    TempData["message"] = confirmation.Message;
                    return RedirectToAction("Edit", "Artwork", new { id = artworkId });
                }

                ViewData["message"] = confirmation.Message;
            }
            return View(_editionTasks.CreateEditViewModel(edition));
        }