You stated, "The thing is, the report won’t be able to show data if the filtered field has no information. "

I'm not sure you understand what I am trying to do.  I want to list all the invoices that have not shipped.  For example, if invoices 1, 2, and 3 have shipped and invoices 4, 5, and 6 have not shipped, then then the tracking numbers for invoices 1, 2, and 3 are not empty, and the tracking numbers for invoices 4, 5, and 6 are empty.  I want to create a report that lists invoices 4, 5, and 6.  In other words, the report should show information, even though one of the fields is empty.