Hi there,
I am experiencing an odd behavior with Avalara, when the cart is loaded on frontend it calculates/adds taxes orderlines but when I open the cart in DW one tax orderline is removed: https://www.screencast.com/t/8N5J5qpD8
After look into Avalara and Ecom logs it looks that the issue seems to be in a DW feature called DeletedDoubleOrderLines that is being activated and propably is deleting what it thinks to be a duplicated tax (log taken from /Log/eCom/CartV2/DeletedDoubleOrderLines):
2018-09-29 13:45:28.8536|INFO|eCom/CartV2/DeletedDoubleOrderLines|OrderId:'CART754' OrderLineId:'OL13892' ProductId:'' VariantId:'' ProductNumber:'Tax Id# 5599359264586970'
The "duplicated" Avalara tax orderline has the same ProductName but this is filled with TaxName xml node (see attached xml response). The TaxName is the same but it refers to a different tax - as you can see JurisCode and JurisName xml nodes are different between taxes.
DW version: 9.4.18
BR, Mario