I have a macro below, however it doesn't pick up any changes for PVC-S but it works for the rest. Please could anyone help to point out the mistake?

VBA Code:

```
Private Sub C2_Reconcile2020()
Dim ws1 As Worksheet, ws As Worksheet, lastrow As Long, LRow As Long, i As Long, r As Long
Set ws = Worksheets("SUP Tracker")
Set ws1 = Worksheets("Change Log")
lastrow = ws.Cells(Rows.Count, "A").End(xlUp).Row
LRow = ws1.Cells(Rows.Count, "A").End(xlUp).Row
For i = LRow To 2 Step -1
For r = lastrow To 2 Step -1
'Y modules may have same item used for multiple presentations
If ws.Cells(r, "A").Value = "PVC-S" _
And ws1.Cells(i, "A").Value = ws.Cells(r, "A").Value _
And ws1.Cells(i, "B").Value = ws.Cells(r, "B").Value _
And ws1.Cells(i, "C").Value = ws.Cells(r, "C").Value _
And ws1.Cells(i, "E").Value = ws.Cells(r, "E").Value _
And ws1.Cells(i, "F").Value = ws.Cells(r, "F").Value Then
ElseIf ws.Cells(r, "A").Value <> "PVC-S" _
And ws1.Cells(i, "A").Value = ws.Cells(r, "A").Value _
And ws1.Cells(i, "B").Value = ws.Cells(r, "B").Value _
And ws1.Cells(i, "E").Value = ws.Cells(r, "E").Value _
And ws1.Cells(i, "F").Value = ws.Cells(r, "F").Value Then
For Each Z In Array("C", "D", "G", "H", "I", "J", "K")
If ws1.Cells(i, Z).Value <> ws.Cells(r, Z).Value Then
ws1.Cells(i, Z).Interior.ColorIndex = 6
ws.Cells(r, Z).Value = ws1.Cells(i, Z).Value
End If
Next Z
End If
Next r
Next i
End Sub
```