I'm using SaasAnt to import construction industry scheme (CIS) bills our own system generates. The product/service is set to CIS Labour standard (20%) and all the other fields are correctly mapped. The import works fine and the bill is created but the "Less CIS" field does not update. This updates automatically when I create the exact same bill manually. It would be useful to understand why this field does not update for imports. It's frustrating as I want to import hundreds a week. Is there a workaround?