diff --git a/source/CHANGELOG.md b/source/CHANGELOG.md
index 7924fff9..76c2099e 100644
--- a/source/CHANGELOG.md
+++ b/source/CHANGELOG.md
@@ -1,6 +1,12 @@
 BlueM.Wave Release Notes
 ========================
 
+Version 2.4.4
+-------------
+FIXED:
+* Fixed issue with deleting series or editing series properties in the properties window, 
+  this only affected series with extreme dates that cannot be entirely displayed in the chart #68
+
 Version 2.4.3
 -------------
 FIXED:
diff --git a/source/Classes/TimeSeries.vb b/source/Classes/TimeSeries.vb
index 2f897bea..fbb86e1b 100644
--- a/source/Classes/TimeSeries.vb
+++ b/source/Classes/TimeSeries.vb
@@ -465,8 +465,12 @@ Public Class TimeSeries
     ''' <summary>
     ''' Clones a time series
     ''' </summary>
-    Public Function Clone() As TimeSeries
+    ''' <param name="preserveId">if True, the Id is preserved, otherwise a new unique Id is assigned (default)</param>
+    Public Function Clone(Optional preserveId As Boolean = False) As TimeSeries
         Dim target As New TimeSeries(Me.Title)
+        If preserveId Then
+            target._id = Me.Id
+        End If
         target.Unit = Me.Unit
         target.Objekt = Me.Objekt
         target.Type = Me.Type
diff --git a/source/Controllers/WaveController.vb b/source/Controllers/WaveController.vb
index 062ae426..561545ad 100644
--- a/source/Controllers/WaveController.vb
+++ b/source/Controllers/WaveController.vb
@@ -2124,9 +2124,10 @@ Friend Class WaveController
     ''' <param name="ts">Die anzuzeigende Zeitreihe</param>
     Private Sub SeriesAdded(ts As TimeSeries)
 
-        'Remove nodes if necessary (#68)
+        'Check for extreme dates not supported by TChart
+        'and if necessary create a copy with removed nodes for display purposes (#68)
         If ts.StartDate < Constants.minOADate Then
-            ts = ts.Clone()
+            ts = ts.Clone(preserveId:=True)
             Dim t_too_early = New List(Of DateTime)
             For Each t As DateTime In ts.Dates
                 If t < Constants.minOADate Then
@@ -2141,7 +2142,7 @@ Friend Class WaveController
             Log.AddLogEntry(Log.levels.warning, $"Unable to display {t_too_early.Count} nodes between {t_too_early.First().ToString(Helpers.CurrentDateFormat)} and {t_too_early.Last().ToString(Helpers.CurrentDateFormat)}!")
         End If
         If ts.EndDate > Constants.maxOADate Then
-            ts = ts.Clone()
+            ts = ts.Clone(preserveId:=True)
             Dim t_too_late As New List(Of DateTime)
             For Each t As DateTime In ts.Dates.Reverse()
                 If t > Constants.maxOADate Then
diff --git a/source/My Project/AssemblyInfo.vb b/source/My Project/AssemblyInfo.vb
index 7e10bb4e..b8056d17 100644
--- a/source/My Project/AssemblyInfo.vb	
+++ b/source/My Project/AssemblyInfo.vb	
@@ -31,5 +31,5 @@ Imports System.Runtime.InteropServices
 ' by using the '*' as shown below:
 ' <Assembly: AssemblyVersion("1.0.*")>
 
-<Assembly: AssemblyVersion("2.4.3.*")>
-'<Assembly: AssemblyFileVersion("2.4.3.*")>
+<Assembly: AssemblyVersion("2.4.4.*")>
+'<Assembly: AssemblyFileVersion("2.4.4.*")>