Trying to get a sub-report to open sorted by ItemN

I have a form that has a sub-form.  I have been able to make the sub-form sort the records in descending order by setting OrderBy = [ItemN] in the Form Data properties.

But I have a report opening from a command button on the form and the details in the sub-report WILL NOT sort in the proper order even though the record source for the sub-report is a query with the field ItemN set to descending.

??