I'll shed some light on the payroll subscription when upgrading your QuickBooks Desktop version, @eugenieg1.
When upgrading to 2024, your payroll subscription will automatically sync, and work as is. In the event of a sync issue, we'll want to keep your payroll service key handy and revalidate it on the new version.
When you're ready to upgrade, we'll want to download the QuickBooks desktop manager tool. You can use this link to download it and follow the prompts: Downloads & Updates.
I'll be providing you with these articles to help you keep track of your QuickBooks latest version:
Fill me in if you have additional questions about installing QuickBooks Desktop or have other QuickBooks-related concerns by leaving a comment below. I'm always here to help. Take care always.