diff --git a/AIStudio.Wpf.DiagramDesigner/Models/Serializables/LogicalGateDesignerItemBase.cs b/AIStudio.Wpf.DiagramDesigner/Models/Serializables/LogicalGateDesignerItemBase.cs
index 8ead1e4..5558319 100644
--- a/AIStudio.Wpf.DiagramDesigner/Models/Serializables/LogicalGateDesignerItemBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Models/Serializables/LogicalGateDesignerItemBase.cs
@@ -13,7 +13,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
 
         }
-        public LogicalGateDesignerItemBase(LogicalGateItemViewModelBase item) : base(item)
+        public LogicalGateDesignerItemBase(LogicalGateItemViewModelBase item, string reserve = null) : base(item, reserve)
         {
             this.OrderNumber = item.OrderNumber;
             this.LogicalType = item.LogicalType;
diff --git a/Extensions/AIStudio.Wpf.Flowchart/Models/FlowNodeDesignerItem.cs b/Extensions/AIStudio.Wpf.Flowchart/Models/FlowNodeDesignerItem.cs
index 14becb8..2c56253 100644
--- a/Extensions/AIStudio.Wpf.Flowchart/Models/FlowNodeDesignerItem.cs
+++ b/Extensions/AIStudio.Wpf.Flowchart/Models/FlowNodeDesignerItem.cs
@@ -13,6 +13,8 @@ using System.Reflection;
 
 namespace AIStudio.Wpf.Flowchart.Models
 {
+    [Serializable]
+    [XmlInclude(typeof(FlowNodeDesignerItem))]
     public class FlowNodeDesignerItem : DesignerItemBase
     {
         public FlowNodeDesignerItem()
diff --git a/Extensions/AIStudio.Wpf.Logical/Models/LogicalGateItem.cs b/Extensions/AIStudio.Wpf.Logical/Models/LogicalGateItem.cs
index 775dfe1..026db24 100644
--- a/Extensions/AIStudio.Wpf.Logical/Models/LogicalGateItem.cs
+++ b/Extensions/AIStudio.Wpf.Logical/Models/LogicalGateItem.cs
@@ -1,8 +1,12 @@
 using AIStudio.Wpf.Logical.ViewModels;
 using AIStudio.Wpf.DiagramDesigner;
+using System.Xml.Serialization;
+using System;
 
 namespace AIStudio.Wpf.Logical.Models
 {
+    [Serializable]
+    [XmlInclude(typeof(LogicalGateItem))]
     public class LogicalGateItem : LogicalGateDesignerItemBase
     {
         public LogicalGateItem()