Great question, Ryan. The prompt you noticed is a tracking item used by QuickBooks to comply with the One Big Beautiful Bill (OB3), also known as the Working Families Tax Cut Act.
QuickBooks tracks qualified overtime separately for employees, who can claim it as a deduction on their year-end tax returns. As noted in the system, this does not affect the employee's net pay or your total payroll liability.
It's only a reporting tool that allows QuickBooks to populate Code TT on your employees' W-2s and maintain accurate tax records. You can check out this article to learn more: Impact of the No Tax on Overtime provision to QuickBooks Payroll.
Regarding your follow-up question, you do not need to add this back or manually adjust the paycheck. QuickBooks is simply performing the administrative work required to keep your business compliant with these new IRS reporting standards.
Please let me know if you have any further questions.