Thanks for the reply, @JasroV. Regardless of what report I run (invoice list, transaction list by customer), the memo-description field is pulling in information from the statement description box and not the invoice description box on an invoice (see attached for difference). 

I need to run a report for all invoices within a certain time frame and include the information filed in the invoice description box (which, in our case, is the campaign information). 

Is there a way to pull information from invoice descriptions into reports?