Sub Exportation()
Application.ScreenUpdating = False
DL = [AH65500].End(xlUp).Row ' dernière ligne, prendre une colonne sans erreur
For L = 18 To DL ' Le tableau commence en 18
If Cells(L, "BB") = "" And Not IsError(Cells(L, "AX")) Then Cells(L, "BB") = Cells(L, "AX")
If Cells(L, "BD") = "" And Not IsError(Cells(L, "AY")) Then Cells(L, "BD") = Cells(L, "AY")
Next L
End Sub