Yes, you're supposed to receive a notification, David.

QuickBooks will auto-update the tax codes for you in Advanced payroll. If it doesn't, there's an option where you can manually update them.

Additionally, I'll add this link for you to scan help articles and step-by-step instructions for QuickBooks Online Advanced Payroll: Advanced Payroll hub | QuickBooks Online.

Comment below if you have further questions about your P6 forms. I'll be around to help. Have a great day!