Hello, ADVREST.
Thank you for reaching out to the Community. Let's double-check the data you've open. It could be you've opened a different file that's why you were not able to see the data. That said, let review the files if it's the most recent one or the previous backup copy.
I've got a link here that provides you with articles about Restore your file and backup files in QuickBooks Desktop Point of Sale.
You're always welcome to post in the Community if you need our help. Don't hesitate to get in touch.