Hey there account23,
Welcome to the Community! It's always great to see new faces. QuickBooks Online Payroll is a great tool to have. It helps make sure your employees are getting paid the correct amount of hours worked. I would be happy to provide some information.
Once a pay cheque has been deleted from QuickBooks, there isn't a way to get them back. You would need to recreate them using the exact information that was entered the first time. I can see how being able to retrieve deleted pay cheques would be beneficial for you. I encourage you to leave feedback by heading to the Gear icon and selecting the Feedback option. These comments are viewed and considered by our developers as they create new features and updates for QuickBooks.
If you have any other questions, feel free to reach back out to us here.