Location based sales tax is incorrectly calculating for just one delivery location
In our membership-based business we have orders which are opened to our customers/members for a set period of time and then we close the order and generate invoices for those customers who purchased items. We often generate in excess of 100 invoices in conjunction with an order and use Zed Axis to import our invoice information into QBO in order to automate the invoicing.
Since we deliver our products to centralized locations we charge the sales tax based on the specific delivery location and not our address, nor the address of our customers. In order to get the newer version of QBO to generate the correct sales we've "tricked" it into accepting the delivery location to calculate appropriate sales tax. This is working for 19 of the 20 delivery locations we have. But for some reason we have one location in which the sales tax is defaulting back to our business address.
Any thoughts on what could be causing this, and how to troubleshoot for and/or fix the problem?