Two years later and this is still a thing!? 

I'd love to have been in the meeting where someone said: "What happens if someone wants to disable this?" 

Was the response: "F them."? 

How is custom software that uses their own tax rates, or say using Avalara's API to get the tax amount for special use cases able to submit the proper tax, so that invoices can be true'd up. Right now I'm running into an issue where we are using avalara to get accurate sales tax and it's being ignored during an invoice sync. 

Then, when I login to the UI, Quickbooks is like "Yeah, I see you tried to set the tax rate, but we don't care, here's the new value.. sorry about your integration though.." 

And it seems the next step is to.. and I can't believe this is the case.. but... Create a new quickbooks account and pray to god nobody accidentally enables this "feature" ?