I think a bit of VBA code should do it for you: without seeing the
macros you ran earlier it's tough to say. This worked for me- give it
a try on some backup data, and please let me know how it worked out.

Sub No_010_013()
Dim rCell
Dim NewValue As Variant
Dim K As Long 'counter

For Each rCell In ActiveSheet.UsedRange
'If rCell.Value = "" Then GoTo Bailout:
For K = 1 To Len(rCell.Value)
If Asc(Mid(rCell.Value, K, 1)) < 10 And Asc(Mid(rCell.Value, K,
1)) < 13 Then
NewValue = NewValue & Mid(rCell.Value, K, 1)
End If
Next K
rCell.Value = NewValue
NewValue = ""
Bailout:
Next rCell
End Sub