CourseBll.cs

foreach (var lp in c.LessonPlans)
            {
                var copy = new LessonPlan(lp.Name, lp.Organization)
                {
                    Association = lp.Association,
                    Category = lp.Category,
                    Class = null,
                    Course = c2,
                    Description = lp.Description,
                    EstimatedDate = lp.EstimatedDate,
                    EstimatedTime = lp.EstimatedTime,
                    OrderNumber = lp.OrderNumber
                };

                var files = new FileDao(Session).GetForObject(lp).Execute(Session).ToList();
                var bll = new FileBll(Session);

                foreach (var of in files)
                {
                    Object2File o2f = new Object2File(copy, of.File);
                    Session.Save(o2f);
                }

                Session.Save(copy);
                c2.LessonPlans.Add(copy);
            }