diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/ConnectionViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/ConnectionViewModel.cs
index 32c792c..30cdb60 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/ConnectionViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/ConnectionViewModel.cs
@@ -2,13 +2,10 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
-using System.Diagnostics;
 using System.Linq;
 using System.Windows;
-using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
-using AIStudio.Wpf.DiagramDesigner.Controls;
 using AIStudio.Wpf.DiagramDesigner.Geometrys;
 using AIStudio.Wpf.DiagramDesigner.Helpers;
 using SvgPathProperties;
@@ -31,7 +28,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         }
 
         public ConnectionViewModel(IDiagramViewModel root, ConnectorInfoBase sourceConnectorInfo, ConnectorInfoBase sinkConnectorInfo, DrawMode drawMode = DrawMode.ConnectingLineSmooth, RouterMode routerMode = AIStudio.Wpf.DiagramDesigner.RouterMode.RouterNormal) : base(root)
-        {          
+        {
             _pathMode = drawMode.ToString();
             _routerMode = routerMode.ToString();
             Init(root, sourceConnectorInfo, sinkConnectorInfo);
@@ -65,16 +62,16 @@ namespace AIStudio.Wpf.DiagramDesigner
             if (sinkConnectorInfo is FullyCreatedConnectorInfo sink && sink.DataItem.ShowArrow == false)
             {
                 this.ShapeViewModel.SinkMarker = new SharpPath("", 10, 10, PathStyle.None, SizeStyle.Middle);
-            }         
+            }
             var routetype = TypeHelper.GetType(RouterMode);
             Router = routetype != null ? (System.Activator.CreateInstance(routetype) as IRouter) : new RouterNormal();
             var pathGeneratortype = TypeHelper.GetType(PathMode);
             PathGenerator = pathGeneratortype != null ? (System.Activator.CreateInstance(pathGeneratortype) as IPathGenerator) : new ConnectingLineSmooth();
-            IsLoaded= true;
+            IsLoaded = true;
 
             this.SourceConnectorInfo = sourceConnectorInfo;
             this.SinkConnectorInfo = sinkConnectorInfo;
-            
+
 
             DeleteConnectionCommand = new SimpleCommand(Command_Enable, DeleteConnection);
             AddVertexCommand = new SimpleCommand(Command_Enable, AddVertex);
@@ -87,8 +84,18 @@ namespace AIStudio.Wpf.DiagramDesigner
 
             if (designerbase is ConnectionItem designer)
             {
-                Vertices = new ObservableCollection<ConnectorVertexModel>(designer.Vertices.Select(p => new ConnectorVertexModel(this.Root, this, designer)));
-                Labels = new ObservableCollection<ConnectorLabelModel>(designer.Labels.Select(p => new ConnectorLabelModel(this.Root, this, designer)));
+                Vertices = new ObservableCollection<ConnectorVertexModel>(designer.Vertices.Select(p => {
+                    ConnectorVertexModel temp = new ConnectorVertexModel(this.Root, this, designer) { ConnectorVertexType = p.ConnectorVertexType };
+                    return temp;
+                }));
+                Labels = new ObservableCollection<ConnectorLabelModel>(designer.Labels.Select(p => {
+                    ConnectorLabelModel temp = new ConnectorLabelModel(this.Root, this, designer)
+                    {
+                        Distance = p.Distance,
+                        Offset = p.Offset
+                    };
+                    return temp;
+                }));
             }
         }
 
@@ -475,7 +482,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         protected override void Item_PropertyChanged(object sender, PropertyChangedEventArgs e)
         {
-            if (IsLoaded == false || IsInternalChanged == true ) return;
+            if (IsLoaded == false || IsInternalChanged == true) return;
 
             if (sender is ConnectionViewModel)
             {
@@ -577,7 +584,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                         {
                             UpdatePathGeneratorResult();
                         }
-                        else if(connectorVertexModel.ConnectorVertexType == ConnectorVertexType.Start)
+                        else if (connectorVertexModel.ConnectorVertexType == ConnectorVertexType.Start)
                         {
                             var nearPort = Root.FindNearPortToAttachTo(this, ConnectorVertexType.Start);
                             SetSourcePort(new PartCreatedConnectorInfo(connectorVertexModel.Position.X, connectorVertexModel.Position.Y));
@@ -683,12 +690,12 @@ namespace AIStudio.Wpf.DiagramDesigner
             StartAngle = PathGeneratorResult.SourceMarkerAngle;
             EndAngle = PathGeneratorResult.TargetMarkerAngle;
 
-            StartPoint = new PointBase(source.Value.X - Area.Left , source.Value.Y - Area.Top );
-            EndPoint = new PointBase(target.Value.X - Area.Left , target.Value.Y - Area.Top);
+            StartPoint = new PointBase(source.Value.X - Area.Left, source.Value.Y - Area.Top);
+            EndPoint = new PointBase(target.Value.X - Area.Left, target.Value.Y - Area.Top);
 
             var startVertice = Vertices.FirstOrDefault(p => p.ConnectorVertexType == ConnectorVertexType.Start);
             if (startVertice == null)
-            {               
+            {
                 startVertice = AddEndsVertex(StartPoint, ConnectorVertexType.Start);
             }
             else
@@ -697,7 +704,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                 startVertice.SetPosition(StartPoint);
                 IsInternalChanged = true;
             }
-            startVertice.ColorViewModel.FillColor.Color = SourceConnectorInfoFully != null? Colors.DarkRed : Colors.Blue;
+            startVertice.ColorViewModel.FillColor.Color = SourceConnectorInfoFully != null ? Colors.DarkRed : Colors.Blue;
             startVertice.ColorViewModel.LineColor.Color = SourceConnectorInfoFully != null ? Colors.DarkRed : Colors.Blue;
 
             var endVertice = Vertices.FirstOrDefault(p => p.ConnectorVertexType == ConnectorVertexType.End);
@@ -957,7 +964,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         public ConnectorVertexModel AddEndsVertex(PointBase pointBase, ConnectorVertexType connectorVertexType)
         {
             var vertice = new ConnectorVertexModel(this, pointBase);
-            vertice.ConnectorVertexType= connectorVertexType;
+            vertice.ConnectorVertexType = connectorVertexType;
             vertice.PropertyChanged += new WeakINPCEventHandler(Item_PropertyChanged).Handler;
             Vertices.Add(vertice);