Hello, @JKPowell. 

I can share additional information about mapping payroll items in QuickBooks Time to QuickBooks Desktop (QBDT).

You can map your payroll items by having an active subscription payroll. Then, import your data from QuickBooks Desktop to QuickBooks Time using web connector. It'll make sure that your data will be updated and synced. 

Refer to this article for more information about using the Payroll Item Mapping Tool to assign payroll items to your hours: Map QuickBooks payroll items in QuickBooks Time. 

I suggest reaching out to our Customer Support team to check for any workarounds that can help you with mapping your payroll items without a payroll subscription. Refer to this article for detailed guidance on how to contact them and their availability: Contact QuickBooks Time support. 

I'm always here if you need help with mapping your. Let me know by leaving a reply below. Take care and have a great rest of the day!