Application.EnableEvents = FALSE not working

Hi all,

I have the following code in my workbook:

Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
Application.EnableEvents = False
With Worksheets("Forecast Files")

.Activate
.FcstSchool.Value = "School"
.Range("C3").Select
ActiveWindow.ScrollColumn = ActiveCell.Column
ActiveWindow.ScrollRow = ActiveCell.row

End With
With Worksheets("Revenue Forecasts")

.Activate
.Forecast.Value = "Forecast"
.School.Value = "School"
.Range("D3").Select
ActiveWindow.ScrollColumn = ActiveCell.Column
ActiveWindow.ScrollRow = ActiveCell.row

End With
Application.EnableEvents = True
End Sub

During normal use of the workbook, there is a Change event that triggers when FcstSchool is changed, but I do NOT want that to trigger during this save event. I've been using this workbook/code for a couple of years and it's never been an issue, now all of the sudden the Change event is triggering after the highlighted line despite the EnableEvents = False line. Any ideas why this would have changed all of a sudden and how I can get it to work properly again? Thanks!