I am trying to add an address using the cartDeliveryAddressesAdd mutation (Shopify Storefront Cart API, version 2025-01), but I am not seeing any difference between totalAmount and checkoutChargeAmount, even though the “External Taxes” option is enabled. However, the amount difference appears when I use the cartBuyerIdentityUpdate mutation (version 2024-10)
Note: The difference of 2 is because of shipping charge, not the tax.
Please suggest what could be the cause of this.
