At the moment it's impossible to do appropriate customs declarations for people who consolidate a lot of packages because the system doesn't allow to adjust it when the final consolidated package is ready to be shipped.
A list of all customs declarations of single packages is created and it's not good at all, especially if most of the packages have the same things inside, creating a big confusing list with identical nomenclatures.
For people who decides to consolidate and not ship immediately give us the possibility to adjust customs declaration after the consolidation!