Hello there, @Wgeary.
I'd be glad to join the thread and help you today so you'll be able run the Sales by Item Detail report correctly.
First, please ensure to customize the report correctly with the correct dates or report period. QuickBooks Desktop (QBDT) allows you to customize any report that you generate. You can customize the data, add or delete columns, add or remove information on the header/footer, and even personalize the font and style of the report.
However, if the issue continues after customizing the reports correctly, it would be best if you can get in touch with our Support Team to investigate this further securely.
On the other hand, to learn more about customizing reports in QBDT, you may check this article: Customize reports in QuickBooks Desktop.
Please know that I'll be right here to help you if you have any other report concerns by adding a comment below. Have a wonderful day ahead!