Shawn - what we've done temporarily, until we hear back from Intuit is:
1. An edit to a customer from Method to set a customer to be non-taxable will be ignored.
2. An edit to a customer to make them taxable will succeed.
Currently, until there is a fix from Intuit, there is no way for a 3rd party app like ours to make your customers non-taxable. Crazy, I know.
We're working with them to get a timeline of a fix, as well as find out how we can set all your customers to be non-taxable. If we can do that, then at least we can just update your KS customers to be taxable, and get this mess resolved.
Paul