For others reading this, here are some steps:

- Make sure all invoices that will use the older tax rate are already posted.
- Print and clear the tax summary report in Adagio Invoices.
- From Edit Tax Groups, change the tax jurisdiction rate to the necessary rate.
- If you use the Archived Batch function, you probably should run Update Archived Batches to recalculate the taxes for these saved invoices.

Regards,