Nhibernate 已删除对象按级联重新保存-自引用表

我得到以下错误： “已删除的对象将通过级联重新保存（从关联中删除已删除的对象）”

我已将整个ajax调用裁剪为以下内容：

    [HttpPost]
    [UnitOfWork(Scope = FilterScope.Result)]
    public ActionResult SaveEditMode(long id, AddTrackedRowViewModel model, string editMode, List<string> elementNames, string provisionData)
    {    
       var cell = _supplementCoordinator.GetSupplement(id).TrackedTables.First(x => x.Name == model.Name).TrackedRows.First(x => x.Ordinal == model.Ordinal).TrackedCells.First(x => x.Name == "Detail");
       _supplementCoordinator.RemoveChildren(cell);

        return Json( new {Success = true});
    }



    public bool RemoveChildren(TrackedNode parentNode)
    {
        foreach (TrackedField trackedField in parentNode.ChildNodes)
        {
            _trackedFieldRepository.Delete(trackedField);
        }
        return true;
    }

---

只需从父集合中删除子节点，如错误所示：

public bool RemoveChildren(TrackedNode parentNode)
    {
        foreach (TrackedField trackedField in new List<TrackField>(parentNode.ChildNodes))
        {
            _trackedFieldRepository.Delete(trackedField);
            _parentNode.Remove(trackField);
        }
        return true;
    }

public bool RemoveChildren（TrackedNode parentNode）
{
foreach（TrackedField新列表中的TrackedField（parentNode.ChildNodes））
{
_trackedFieldRepository.Delete（trackedField）；
_parentNode.Remove（trackField）；
}
返回true；
}

是的。新鲜的眼睛。谢谢

public bool RemoveChildren(TrackedNode parentNode)
    {
        foreach (TrackedField trackedField in new List<TrackField>(parentNode.ChildNodes))
        {
            _trackedFieldRepository.Delete(trackedField);
            _parentNode.Remove(trackField);
        }
        return true;
    }