@Ricardo Barboza (KIM)
Thank you for the quick follow up on this!
When it comes to changing the account and using a different Key Vault, you should be able to do this by going to the -
Solution Explorer -> right-click the project you added Key Vault support to, and choose
Add > Connected Service. The Connected Service page appears with Service Dependencies, which you can edit or remove.
For more info - Add Key Vault support to your project
I hope this helps! If you're still running into issues with this, please let me know.
Thank you for your time and patience throughout this issue.
Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.