diff --git a/Machine/CurrentMachine.vb b/Machine/CurrentMachine.vb
index f61cfd3..cfad857 100644
--- a/Machine/CurrentMachine.vb
+++ b/Machine/CurrentMachine.vb
@@ -1327,7 +1327,7 @@ Public Class CurrentMachine
       ' Leggo valori da file Data e li carico nelle proprietà
       Dim sFilePath As String = sMachDir & "\" &  MACHININGS_DIR & "\" & WATERJETDB_FILE
       Dim Local_MaterialList = New ObservableCollection(Of EgtWPFLib5.WjMaterial)
-      Local_MaterialList = EgtWPFLib5.WaterjetDbWindowVM.LoadWjMaterials(sFilePath)
+      Local_MaterialList = WaterjetDbWindowVM_OmagCUT.LoadWjMaterials(sFilePath)
       ' definisco la lista delle qualità (solo se è vuota)
       If m_Qualities.Count < 1 Then
          m_Qualities.Add("Q1")
@@ -1358,7 +1358,7 @@ Public Class CurrentMachine
       ' Leggo valori da file Data e li carico nelle proprietà
       Dim sFilePath As String = sMachDir & "\" & MACHININGS_DIR & "\" & WATERJETDB_FILE
       Dim Local_MaterialList = New ObservableCollection(Of EgtWPFLib5.WjMaterial)
-      Local_MaterialList = EgtWPFLib5.WaterjetDbWindowVM.LoadWjMaterials(sFilePath)
+      Local_MaterialList = WaterjetDbWindowVM_OmagCUT.LoadWjMaterials(sFilePath)
       Dim sItems() As String = sCurMat.Split("."c)
       If sItems.Count > 1 Then
          Dim sMat As String = sItems(0)
diff --git a/Machine/MachinePageUC.xaml.vb b/Machine/MachinePageUC.xaml.vb
index 3fb1078..d725942 100644
--- a/Machine/MachinePageUC.xaml.vb
+++ b/Machine/MachinePageUC.xaml.vb
@@ -145,12 +145,12 @@ Public Class MachinePageUC
             m_ActiveMachinePage = MachinePages.Alarms
          Case MachinePages.WaterJet
             ' Verifica ed eventuale salvataggio Db Waterjet
-            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                AlarmsBtn.IsChecked = False
                WaterJetBtn.IsChecked = True
                Return
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
             ' passo alla pagina Dati Macchina
@@ -215,12 +215,12 @@ Public Class MachinePageUC
             m_ActiveMachinePage = MachinePages.ToolsDb
          Case MachinePages.WaterJet
             'Verifica ed eventuale salvataggio Db Waterjet
-            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                ToolsDBBtn.IsChecked = False
                WaterJetBtn.IsChecked = True
                Return
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
             ' passo alla pagina Dati Macchina
@@ -285,12 +285,12 @@ Public Class MachinePageUC
             m_ActiveMachinePage = MachinePages.MachiningDb
          Case MachinePages.WaterJet
             ' Verifica ed eventuale salvataggio Db Waterjet
-            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                MachiningDBBtn.IsChecked = False
                WaterJetBtn.IsChecked = True
                Return
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
             ' passo alla pagina Dati Macchina
@@ -358,12 +358,12 @@ Public Class MachinePageUC
             PolishingsBtn.IsChecked = True
          Case MachinePages.WaterJet
             ' Verifica ed eventuale salvataggio Db Waterjet
-            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                PolishingsBtn.IsChecked = False
                WaterJetBtn.IsChecked = True
                Return
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
             ' passo alla pagina Dati Macchina
@@ -513,12 +513,12 @@ Public Class MachinePageUC
             m_ActiveMachinePage = MachinePages.MachineCN
          Case MachinePages.WaterJet
             ' Verifica ed eventuale salvataggio Db Waterjet
-            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                TestingPageBtn.IsChecked = False
                WaterJetBtn.IsChecked = True
                Return
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
             ' passo alla pagina Dati Macchina
@@ -593,12 +593,12 @@ Public Class MachinePageUC
             m_ActiveMachinePage = MachinePages.Statistics
          Case MachinePages.WaterJet
             ' Verifica ed eventuale salvataggio Db Waterjet
-            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                StatisticsBtn.IsChecked = False
                WaterJetBtn.IsChecked = True
                Return
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
             ' passo alla pagina Dati Macchina
diff --git a/Machine/WaterJetPageUC.xaml.vb b/Machine/WaterJetPageUC.xaml.vb
index be33a3d..ea728f2 100644
--- a/Machine/WaterJetPageUC.xaml.vb
+++ b/Machine/WaterJetPageUC.xaml.vb
@@ -8,18 +8,18 @@ Public Class WaterJetPageUC
 
    ' Riferimento alla MainWindow
    Private m_MainWindow As MainWindow = DirectCast(Application.Current.MainWindow, MainWindow)
-   Private m_refWaterjetDbWindowVM As EgtWPFLib5.WaterjetDbWindowVM
+   Private m_refWaterjetDbWindowVM As WaterjetDbWindowVM_OmagCUT
    Private m_sOrigNewMaterial As String = String.Empty
    Private m_sOrigNewSubMaterial As String = String.Empty
 
    Private Sub WaterJetPage_Initialized(sender As Object, e As EventArgs)
-      m_refWaterjetDbWindowVM = New EgtWPFLib5.WaterjetDbWindowVM(m_MainWindow.m_CurrentMachine.sMachDir)
+      m_refWaterjetDbWindowVM = New WaterjetDbWindowVM_OmagCUT(m_MainWindow.m_CurrentMachine.sMachDir)
       Me.DataContext = m_refWaterjetDbWindowVM
       EgtWPFLib.Utility.MainWindow = m_MainWindow
    End Sub
 
    Public Sub WaterJetPage_Reinitialize()
-      m_refWaterjetDbWindowVM = New EgtWPFLib5.WaterjetDbWindowVM(m_MainWindow.m_CurrentMachine.sMachDir)
+      m_refWaterjetDbWindowVM = New WaterjetDbWindowVM_OmagCUT(m_MainWindow.m_CurrentMachine.sMachDir)
       Me.DataContext = m_refWaterjetDbWindowVM
    End Sub
 
diff --git a/Machine/WaterjetDbWindowVM.vb b/Machine/WaterjetDbWindowVM.vb
new file mode 100644
index 0000000..2f97eac
--- /dev/null
+++ b/Machine/WaterjetDbWindowVM.vb
@@ -0,0 +1,60 @@
+Imports System.Collections.ObjectModel
+Imports System.IO
+Imports EgtUILib
+Imports EgtWPFLib5
+Imports EgtWPFLib
+
+Public Class WaterjetDbWindowVM_OmagCUT
+   Inherits EgtWPFLib5.WaterjetDbWindowVM
+
+   Public Function CloseWaterjetDb_OmagCut(MainWindow As Window) As SaveWndBtnEnum
+      If bIsModified Then
+         Dim SaveWjDbWnd As New EgtMsgBox(MainWindow, "", EgtMsg(31759), EgtMsgBox.Buttons.YES_NO_CANCEL, EgtMsgBox.Icons.NULL)
+         Select Case SaveWjDbWnd.m_nPressedBtn
+            Case 1   ' Yes
+               WriteWaterjetDb()
+               bIsModified = False
+               Return SaveWndBtnEnum.YES
+            Case 2   ' No
+               Return SaveWndBtnEnum.NO
+            Case Else   ' Cancel
+               Return SaveWndBtnEnum.CANCEL
+         End Select
+      Else
+         Dim bExitFor As Boolean = False
+         For Each Material As EgtWPFLib5.WjMaterial In MaterialList
+            If Not IsNothing(Material.SubMaterialList) Then
+               For Each SubMaterial As EgtWPFLib5.WjSubMaterial In Material.SubMaterialList
+                  If Not IsNothing(SubMaterial.ParamList) Then
+                     For Each QParam As EgtWPFLib5.WjParam In SubMaterial.ParamList
+                        bExitFor = QParam.IsModified()
+                        If bExitFor Then Exit For
+                     Next
+                  End If
+                  If bExitFor Then Exit For
+               Next
+            End If
+            If bExitFor Then Exit For
+         Next
+         If bExitFor Then
+            Dim SaveWjDbWnd As New EgtMsgBox(MainWindow, "", EgtMsg(31759), EgtMsgBox.Buttons.YES_NO_CANCEL, EgtMsgBox.Icons.NULL)
+            Select Case SaveWjDbWnd.m_nPressedBtn
+               Case 1   ' Yes
+                  WriteWaterjetDb()
+                  bIsModified = False
+                  Return SaveWndBtnEnum.YES
+               Case 2   ' No
+                  Return SaveWndBtnEnum.NO
+               Case Else   ' Cancel
+                  Return SaveWndBtnEnum.CANCEL
+            End Select
+         End If
+      End If
+      Return SaveWndBtnEnum.YES
+   End Function
+
+   Sub New(sMachDir As String)
+      MyBase.New(sMachDir)
+   End Sub
+
+End Class
diff --git a/MainWindow.xaml.vb b/MainWindow.xaml.vb
index d5b960c..9e76cd7 100644
--- a/MainWindow.xaml.vb
+++ b/MainWindow.xaml.vb
@@ -1092,10 +1092,10 @@ Class MainWindow
          Case MachinePageUC.MachinePages.WaterJet
             ' Verifica ed eventuale salvataggio Db Waterjet
             Dim m_MainWindow As MainWindow = DirectCast(Application.Current.MainWindow, MainWindow)
-            Dim nPressedBtn As Integer = DirectCast(m_MachinePageUC.m_WaterJetPageUC.DataContext, EgtWPFLib5.WaterjetDbWindowVM).CloseWaterjetDb_OmagCut(m_MainWindow)
-            If nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.CANCEL Then
+            Dim nPressedBtn As Integer = DirectCast(m_MachinePageUC.m_WaterJetPageUC.DataContext, WaterjetDbWindowVM_OmagCUT).CloseWaterjetDb_OmagCut(m_MainWindow)
+            If nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.CANCEL Then
                Return False
-            ElseIf nPressedBtn = EgtWPFLib5.WaterjetDbWindowVM.SaveWndBtnEnum.NO Then
+            ElseIf nPressedBtn = WaterjetDbWindowVM_OmagCUT.SaveWndBtnEnum.NO Then
                m_MachinePageUC.m_WaterJetPageUC.WaterJetPage_Reinitialize()
             End If
       End Select
diff --git a/OmagCUT.vbproj b/OmagCUT.vbproj
index 5589832..aa1d3ec 100644
--- a/OmagCUT.vbproj
+++ b/OmagCUT.vbproj
@@ -205,6 +205,7 @@
     <Compile Include="Machine\ImportExportToolWD.xaml.vb">
       <DependentUpon>ImportExportToolWD.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Machine\WaterjetDbWindowVM.vb" />
     <Compile Include="Machine\WaterJetPageVM.vb" />
     <Compile Include="Machine\WaterJetPageUC.xaml.vb">
       <DependentUpon>WaterJetPageUC.xaml</DependentUpon>