We are implementing Zoho FSM for a cleaning business in the US with 50+ field workers. This business has been using Quickbooks for accounting for decades and will not migrate to Zoho Books. A major issue in the integration is the US sales tax calculation. Because of this, we have decided that the only viable solution is to bypass Zoho Invoice entirely. All Estimates, / Invoices and their taxes must be calculated in QuickBooks. Does anybody have experience with this? I would like to hear if anybody had run into the same challenge and how it was solved.