In that case, all you really needed was:
Code:
Sub CleanUpBrakets()
Application.ScreenUpdating = False
With ActiveDocument.Range.Find
.ClearFormatting
.Replacement.ClearFormatting
.Wrap = wdFindContinue
.Format = False
.MatchWildcards = False
.Text = "^w["
.Replacement.text = "^l["
.Execute Replace:=wdReplaceAll
End With
Application.ScreenUpdating = True
End Sub