Thank you for providing the details about your historical payroll, @OfficeMgr3325. Let me help share some insights about this.
Yes, you can run a paycheck for each employee with previous gross YTD. Then run a payroll based on each period's taxes calculated by your CPA. There's no need to create a journal entry since this will only show your expenses in taxes and liabilities and thus not affect the paystubs when created.
Also, if you need other payroll references in the future, you can refer to this link for information: Commonly used articles for QuickBooks Online Payroll.
This should guide you in the right direction. Keep me posted if you need other information about your historical paychecks. I'm always here to help.