Option Explicit
Sub Tri()
Dim n&
With Worksheets("FM")
n = .Cells(Rows.Count, 1).End(xlUp).Row: If n < 3 Then Exit Sub
Application.ScreenUpdating = 0: n = n - 1: .[A2].Resize(n).Copy
End With
With Worksheets("Feuil2")
.Select: [J2].PasteSpecial xlPasteValues
With Selection
.Sort .Cells(1), 1: .RemoveDuplicates 1, 2
End With
[A1].Select
End With
End Sub