I got this to work. It's cleaner and faster. But if I highlight and clear multiple cells or press delete it does not erase it from the second sheet. I can live with that but if anyone has any tips to do make deleting multiple cells work, that would be great.
This version goes in the CS Scale sheet and a reverse sheet order goes in the RS Scale sheet. Works great.
Private Sub Worksheet_Change(ByVal Target As Range)
Dim rFrom As Range
If Target.Count = 1 ThenWith Target.Worksheet
Worksheets("RS Scale").Range("A2:C500").Value = Worksheets("CS Scale").Range("A2:C500").Value
End With
End If
End Sub