diff --git a/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerV.xaml b/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerV.xaml
index 5c4e040b..d1f8505c 100644
--- a/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerV.xaml
+++ b/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerV.xaml
@@ -58,7 +58,6 @@
    </Button>-->
    <Button Command="{Binding UpdateBTL_Command}"
            ToolTip="{Binding UpdateBTL_ToolTip}"
-           Visibility="Collapsed"
            Style="{StaticResource ToolBar_Button}">
       <Image Source="/Resources/ProjectManager/UpdateBTL.png" Stretch="Uniform"/>
    </Button>
diff --git a/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerVM.vb b/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerVM.vb
index 8b779b64..91018fd1 100644
--- a/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/ProjManager/ProjManagerVM.vb
@@ -801,52 +801,54 @@ Public Class ProjManagerVM
          bOk = bOk AndAlso EgtInsertFile("C:\EgtData\EgtBEAMWALL\Temp\Prova.nge")
          ' deseleziono tutto
          EgtDeselectAll()
-         ' ciclo sui pezzi
+         ' ciclo sui pezzi aggiunti
          Dim nAddedPartId As Integer = EgtGetNextPart(nLastProjPartId)
-         Dim arrPartId As New ArrayList()
-         Dim b3LaterParts As BBox3d = b3Parts
          Dim bFirstLoop As Boolean = True
+         Dim LastPartMaxY As Double
          While nAddedPartId <> GDB_ID.NULL
-            ''' se arrivano dal nuovo progetto
-            ''Dim nCurrProjId As Integer
-            ''EgtGetInfo(nPartId, PROJ, nCurrProjId)
-            ''If nCurrProjId = Map.refProjManagerVM.CurrProj.nProjId Then
-            ' sposto i pezzi per non averli sovrapposti
-            Dim b3LaterPart As New BBox3d
-            EgtGetBBoxGlob(nAddedPartId, GDB_BB.ONLY_VISIBLE, b3LaterPart)
-            b3LaterParts.Add(b3LaterPart)
-            bOk = bOk AndAlso EgtMove(nAddedPartId, New Vector3d(0, b3Parts.DimY() + If(bFirstLoop, 500, 0), 0)) ' EgtMove(nAddedPartId, New Vector3d(0, b3Parts.DimY() + 500, 0))
-            bFirstLoop = False
             ' recupero layer del box
             Dim nBoxLayerId As Integer = EgtGetFirstNameInGroup(nAddedPartId, "Box")
             ' recupero box del layer box
             Dim b3Box As New BBox3d
             EgtGetBBoxGlob(nBoxLayerId, GDB_BB.STANDARD, b3Box)
-            '' se invertito lo reinverto
-            'Dim bFliped As Boolean = bFLIP
-            'If bFliped Then EgtRotate(nPartId, b3Box.Center, Vector3d.X_AX, 180)
-            'Dim dAng As Double = If(IsPositive, 90, -90)
-            ' eseguo rotazione
-            bOk = bOk AndAlso EgtRotate(nAddedPartId, b3Box.Center, -Vector3d.X_AX, -90)
-            ' aggiungiamo il part appena aggiunto, mosso e ruotato al BBox globale
+            ' eseguo rotazione del pezzo
+            Dim ptRot = b3Box.Min() + New Vector3d(0, b3Box.DimZ() / 2, b3Box.DimZ() / 2)
+            bOk = bOk AndAlso EgtRotate(nAddedPartId, ptRot, -Vector3d.X_AX, -90)
+            ' ricaviamo il box globale del part appena aggiunto e ruotato
             Dim b3Part As New BBox3d
             EgtGetBBoxGlob(nAddedPartId, 1, b3Part)
+            ' sposto il pezzo per distanziarlo dall'ultimo di un offset pari a 500
+            bOk = bOk AndAlso EgtMove(nAddedPartId, New Vector3d(0, If(bFirstLoop, b3Parts.DimY(), LastPartMaxY - b3Part.Min.y) + 500, 0))
+            bFirstLoop = False
+            ' ricaviamo il box globale del part appena spostato, salviamo la sua Y massima e lo aggiungiamo al box globale di tutti i part
+            EgtGetBBoxGlob(nAddedPartId, 1, b3Part)
+            LastPartMaxY = b3Part.Max.y
             b3Parts.Add(b3Part)
             nAddedPartId = EgtGetNextPart(nAddedPartId)
          End While
-         ' salvo il file con i part importati
-         bOk = bOk AndAlso EgtSaveFile(Map.refProjManagerVM.CurrProj.sProjPath, NGE.CMPTEXT)
+         ' aggiungo i part inseriti alla lista
+         Dim nNewPartId As Integer = EgtGetNextPart(nLastProjPartId)
+         While nNewPartId <> GDB_ID.NULL
+            ' aggiungo dati pezzo
+            Dim NewPart As BTLPartM = BTLPartM.CreateBTLPart(nNewPartId)
+            ' aggiungo pezzo alla lista
+            Map.refProjectVM.BTLStructureVM.BTLStructureM.AddBTLPart(NewPart)
+            Dim AddedBTLPart As BTLPartVM = Map.refProjectVM.BTLStructureVM.BTLPartVMList.FirstOrDefault(Function(x) x.BTLPartM Is NewPart) 'Map.refProjectVM.BTLStructureVM.SelBTLPart = Map.refProjectVM.BTLStructureVM.BTLPartVMList.FirstOrDefault(Function(x) x.BTLPartM Is NewPart)
+            ' verifico se aggiungere sezione alla lista
+            If Not Map.refProjectVM.BTLStructureVM.SectionList.Contains(AddedBTLPart.Section) Then
+               Map.refProjectVM.BTLStructureVM.SectionList.Add(AddedBTLPart.Section)
+            End If
+            nNewPartId = EgtGetNextPart(nNewPartId)
+         End While
          WriteMainPrivateProfileString(S_GENERAL, K_LASTUPDATEDIR, Path.GetDirectoryName(sFile))
-         ' riapro progetto
-         'Map.refProjManagerVM.OpenProject(Map.refProjManagerVM.CurrProj)
-         Map.refSceneHostVM.MainController.OpenProject(Map.refProjManagerVM.CurrProj.sProjPath, False)
-      End If
-      If bOk Then
-         '' riporto aggiunta proj a prod su Db
-         'DbControllers.m_ProdController.AddProj(OpenProjectFileDialogVM.SelProject.nProdId, Map.refProjManagerVM.CurrProj.nProjId)
-         '' imposto currprod
-         'Map.refProdManagerVM.SetCurrProd(OpenProjectFileDialogVM.SelProject.nProdId)
       End If
+      'If bOk Then
+      '   ' riporto aggiunta proj a prod su Db
+      '   DbControllers.m_ProdController.AddProj(OpenProjectFileDialogVM.SelProject.nProdId, Map.refProjManagerVM.CurrProj.nProjId)
+      '   ' imposto currprod
+      '   Map.refProdManagerVM.SetCurrProd(OpenProjectFileDialogVM.SelProject.nProdId)
+      'End If
+      EgtZoom(ZM.ALL)
    End Sub
 
 #End Region ' UpdateBTL