I noticed that the customs feature in C&D brings up faulty Goods Codes with no option to select accurate codes from the drop down selection. For example, if I ship small bottles below 30ml it has a specific code (which I add in the customs settings). But C&D often automates the code, switching it to "baby bottle", and you can't actually change it to the accurate Goods Code because it can never find any other options for glass bottles except two.