Hello there, @Virtual Accountant_1.
You don't need to take an exam to get certified again. Instead, you can transfer your QuickBooks ProAdvisor badge.
Simply ensure that your new account gives you access to the ProAdvisor Training tab. Then, you'll need to contact us to request the transfer of your certification once you've set up your new QuickBooks Online for Accountant account.
To contact us, please utilize the Help icon within your QBO account and follow the on-screen instructions to complete the process.
Please check this article to see more details about QuickBooks Online Certification: Frequently Asked Questions about ProAdvisor Certification.
I've also got an article that contains information about developing and maintaining great relationships with clients: Firm of the Future.
Stay in touch if you need anything else, Virtual Accountant_1. Take care and have a good one.