Orders
When an order is placed and paid in a non-primary market, it is exported to Quickbooks using the price listed on the Shopify Orders page in your shop's currency. After receiving payment, Shopify’s conversion back into the shop’s currency is not guaranteed to match the listed price due to fluctuations in the market. This can cause a slight deviation between what is paid by the customer in Shopify and what is marked as paid in Quickbooks.
Refunds
Because exchange rates can vary at different times, when refunding orders there can be a slight discrepancy. In this case, Shopify shows a Net payment amount. However, in Quickbooks, Bold refunds the price listed on Shopify’s Orders page as originally recorded.
Read more about currency conversion risks when performing refunds on Shopify's Help Center.