[XL-2007] vba bug target effacement de plusieurs cellules en plage 1

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Private Sub Worksheet_Change(ByVal Target As Range)
 
On Error GoTo ER
Application.EnableEvents = False
If Target.Column = 1 And Target.Count = 1 Then
    If Target.Value = "" Then
        Target.Resize(1, 13).Clear
    Else
        '---------------------------------------------- =SI(a6<>"";"Cotisations encaissées";"")"  -------------------------------------------
        Target.Offset(0, 1) = "Cotisations encaissées"
 
        '---------------------------------------------'=SI(a7<>"";C6+1;"")
        Target.Offset(0, 2).FormulaR1C1 = "=IF(RC[-2]="""","""",R[-1]C+1)"
 
        '----------------------------------------------'=SI(a6<>"";"Cotisation";"")-----------------------------------------------------------
        Target.Offset(0, 3) = "Cotisations"
 
        '------------'=SI(H6="ok";$H$3+0;SI(I6="ok";$I$3+0;SI(J6="ok";$J$3+0;SI(K6="ok";$K$3+0;SI(L6="ok";$L$3+0;SI(M6="ok";$M$3+0;""))))))----
        With Target.Offset(0, 6)
            .FormulaR1C1 = "=IF(RC[1]=""OK"",R3C8,IF(RC[2]=""OK"",R3C9,IF(RC[3]=""OK"",R3C10,IF(RC[4]=""OK"",R3C11,IF(RC[5]=""OK"",R3C12,IF(RC[6]=""OK"",R3C13,""""))))))"
            ' ---'couleur orange
            .Interior.ColorIndex = 45
        End With
        '---'couleur jaune
        Target.Offset(0, 7).Resize(1, 3).Interior.ColorIndex = 6
        '---'couleur gris
        Target.Offset(0, 10).Resize(1, 3).Interior.ColorIndex = 48
        'quadrillage
        With Target.Resize(1, 13).Borders
            .LineStyle = xlContinuous
            .Weight = xlThin
            .ColorIndex = 1
        End With
    End If
End If
ER:
Application.EnableEvents = True
End Sub