diff --git a/server/AyaNova/biz/WorkOrderBiz.cs b/server/AyaNova/biz/WorkOrderBiz.cs
index 0e9f85c7..dc8708bb 100644
--- a/server/AyaNova/biz/WorkOrderBiz.cs
+++ b/server/AyaNova/biz/WorkOrderBiz.cs
@@ -2380,8 +2380,20 @@ namespace AyaNova.Biz
             switch (ayaType)
             {
                 case AyaType.WorkOrder:
+                    if (o is WorkOrder)
+                    {
+                        dtWorkOrder dto = new dtWorkOrder();
+                        CopyObject.Copy(o, dto);
+                        return await WorkOrderPutAsync((dtWorkOrder)o);
+                    }
                     return await WorkOrderPutAsync((dtWorkOrder)o) as ICoreBizObjectModel;
                 case AyaType.WorkOrderItem:
+                    if (o is WorkOrderItem)
+                    {
+                        dtWorkOrderItem dto = new dtWorkOrderItem();
+                        CopyObject.Copy(o, dto);
+                        return await ItemPutAsync((dtWorkOrderItem)o);
+                    }
                     return await ItemPutAsync((dtWorkOrderItem)o);
                 case AyaType.WorkOrderItemExpense:
                     return await ExpensePutAsync((WorkOrderItemExpense)o);