Hello @Kate43,

Thank you for posting here in the Community. I'm here to help you figure out why there are modified paychecks when sending data in QuickBooks Desktop.

It usually happens when there are changes to previous paychecks. Since you didn't modify anything, it may be from another user. These paychecks will show in the Send Data for Intuit to review the payroll details in your company file.

On the Audit Trail report, you have the option to expand the details of the modified checks. Aside from checking the difference, try to check the user linked to the activities from the report.

Also, the purpose of the Send Payroll Data screen is not only for sending new payroll but to review existing paychecks. If there are no differences, I recommend you proceed with sending your payroll to avoid delays.

As long as there are no changes to the information, you should be fine. I've attached a link for your reference about sending payroll data, as well as how to check if payroll was received by Intuit: Send payroll and direct deposit paychecks in QuickBooks Desktop Payroll.

Hit me up by dropping a comment below if you have any other questions about sending payroll or managing existing paychecks in QuickBooks. I'll be happy to help you some more.