Hikashop passing wrong shipping amount to TaxCloud

-- HikaShop version -- : 3.1.0
-- Joomla version -- : 3.7.2
-- PHP version -- : 7.0
-- Browser(s) name and version -- : Chrome 57.0.2987.133

My client uses a flat shipping rate for UPS and USPS. I created 2 shipping methods based on the HikaShop manual shipping plugin:

• USPS
• UPS

For the USPS method, it charges a flat $6.95. You can see the configuration below.


When this passes to TaxCloud at checkout, it just passes $6.00.

For the UPS method, it charges a flat $10.95. You can see the configuration below.


When this passes to TaxCloud at checkout, it just passes $10.00.

My question is this: Why is HikaShop not passing the full shipping cost to TaxCloud?

That did it!

Thanks.