Modifier Macro ajouter une colonne

Bonjour,

J'ai cette macro qui se base à ouvrer un fichier et faire un copier coller :

Sub OpenFiles()
Application.ScreenUpdating = False
    Dim w As Workbook
    Dim w1 As Workbook
    
    ThisWorkbook.Sheets("Feuil1").Range("A1:Z65000").ClearContents
    
    'Open les variable file
    Set w = Workbooks.Open(ThisWorkbook.Sheets("Interface").Range("E4"))
    w.Worksheets(1).Activate
    w.ActiveSheet.Cells.Copy Destination:=ThisWorkbook.Sheets("Les variables").Range("A1")
    w.Close savechanges:=False
    
    'open data file
    Set w1 = Workbooks.Open(ThisWorkbook.Sheets("Interface").Range("E6"))
    lr = w1.ActiveSheet.Range("C" & Rows.Count).End(xlUp).Row
    w1.ActiveSheet.Range("C1", w1.ActiveSheet.Range("C" & lr)).Copy Destination:=ThisWorkbook.Sheets("Feuil1").Range("A1")
    ThisWorkbook.Activate
    ThisWorkbook.Sheets("Feuil1").Activate
    'call macro
    Call decoupe
    ThisWorkbook.Sheets("Feuil1").Columns("A:B").Insert Shift:=xlToRight, CopyOrigin:=xlFormatFromLeftOrAbove
    w1.ActiveSheet.Range("A1", w1.ActiveSheet.Range("B" & lr)).Copy Destination:=ThisWorkbook.Sheets("Feuil1").Range("A1")
    w1.ActiveSheet.Range("E1", w1.ActiveSheet.Range("H" & lr)).Copy Destination:=ThisWorkbook.Sheets("Feuil1").Range("F1")
    w1.Close savechanges:=False
    ThisWorkbook.Sheets("Feuil1").Columns("D:D").Delete Shift:=xlToLeft
    ThisWorkbook.Sheets("Feuil1").Columns.AutoFit
    MsgBox "Task Completed...."
Application.ScreenUpdating = True
End Sub
Sub GetFilePath1()

Set myFile = Application.FileDialog(msoFileDialogOpen)
With myFile
.Title = "Choose File"
.AllowMultiSelect = False
If .Show <> -1 Then
Exit Sub
End If
FileSelected = .SelectedItems(1)
End With

ActiveSheet.Range("E4") = FileSelected
End Sub
Sub GetFilePath2()

Set myFile = Application.FileDialog(msoFileDialogOpen)
With myFile
.Title = "Choose File"
.AllowMultiSelect = False
If .Show <> -1 Then
Exit Sub
End If
FileSelected = .SelectedItems(1)
End With

ActiveSheet.Range("E6") = FileSelected
End Sub

Si vous pouvez m'aider à modifier cette macro pour qu'elle peut ajouter une colonne vide au fichier source avant de faire copier coller, la colonne vide ajoutée doit etre entre colonne C et D.

Merci infiniment