Hello again, @RBlazer.

I want to ensure this gets resolved for you. Since you have no option to edit bulk other names to vendors in QuickBooks Desktop for Mac, I recommend contacting our Customer Care Team. They can initiate a screen-sharing session to review the available options that you have. 

Check out this link for ways on how to connect with us: Contact QuickBooks Desktop support. Ensure to review their support hours so, you'll know when agents are available.

Let me know how it goes and if there's anything else you need. I'm here to help. Take care!