Thanks for trying the steps my colleague provided, Modemers.

I suggest contacting QuickBooks Technical Support so an agent can take a better look at the errors. They have more tools, like screen sharing, that can help you rename the files without any issues.

Here's how you can reach out to them:

1. In QuickBooks, click Help.
2. Choose QuickBooks Desktop Help.
3. In the Have a Question? window, click Contact us.
4. On the Contact Us page, click QuickBooks Setup & Navigation, then choose File Setup & Management.
5. Click Start a Message. 

Visit us anytime if you have other concerns. We'd be happy to work with you again.