Loop through Report Records Update table

Hello, I have a report that I populate with a query that pulls all the records of a table. When I open the report I pass to the report a specific where condition like this:

DoCmd.OpenReport "New Supplier Debit Summary", acViewPreview, WhereCondition:=strSQL, OpenArgs:=SubmittedToAccounting

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When the report opens I want to loop through the recordset and update rows in another table based on a primary key. The problem with my code below is that all the records in the table are being updated rather than just the records on the report that has the where condition applied.

What is wrong with my code? It is in the Report_Open of the report.

Dim SubmittedToAccounting As String
If Me.OpenArgs > "" Then
SubmittedToAccounting = Me.OpenArgs
End If

If SubmittedToAccounting = "1" Then

Dim Rs As DAO.Recordset
Set Rs = Me.Recordset

Dim DateNow As String
DateNow = Format(Now(), "mm/dd/yyyy")

If Not Rs.EOF And Not Rs.BOF Then

   Do Until Rs.EOF
       For N = 0 To Rs.Fields.Count - 1
          Dim myMDR As String
          myMDR = (Rs!MDR)

 If myMDR > "" Then
   DoCmd.RunSQL "Update [Cost of Poor Quality Table] Set [SentToAccounting]=#" & DateNow & "# where [DMR#] = " & myMDR & ""
 End If

       Next
       Rs.MoveNext
   Loop
   Rs.Close
End If

Set Rs = Nothing

End If

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