On January 18, 2017, the Census department released the computer-consumable files for the updated HTS valid for import and export. The updated data is now available in Shipment Wizard for your use as of January 19, 2017, prior to business hours.
The government had been advising customers who were ready to switch to the new numbers to continue using the previous numbers through the grace period. With the new numbers now fully available for Shipment Wizard and other systems, this will no longer be necessary.
The source of this data is found here within Census’ site.