Thanks for the reply, rhsayles.

Allow me to step in for a moment and provide some information about the notification showing in the Time tracking settings section.

QuickBooks Online is currently designed to allow you to add time tracking users that are not tracked as 1099. This is the reason you get the message even if the vendor names appear on the user list.

This message acts as a reminder to avoid duplication of the vendor's profile.

I don't want to leave you empty-handed, so I'm adding a link to see what's new and coming about the product: QuickBooks Blog.

The information I provided should you move forward.

Please let me know if you have additional questions about QBO. I’ll be more than happy to assist further. Have a good one.