Good day!
Thanks for coming back here in the Community forum, and taking the time to share the solution you've performed in switching a VAT-registered company to a non-VAT registered as it is a Charity. Your insight would be of great help to other users who might've experienced the same issue or want to achieve the same goal. Truly, we can fathom any circumstance if we will work as a team.
Please know that you're always welcome to post and share your knowledge anytime here in the Community. If there's anything I could help with, please let me know and I'd be willing to help you out.