What is the reason for retaining the Pre-arrival filing (the current rules) before entry into port in Japan?

What is the reason for retaining the Pre-arrival filing (the current rules) before entry into port in Japan?

Cargo information to be filed in the Pre-departure filing (the new rules) is the scheduled information of cargo to be loaded on a vessel intended for entry into Japan. At the time of deadline of filing, some unfixed information such as quantity of cargo could be included.

Therefore, as Japan Customs needs to confirm whether the cargo, whose information was filed in the Pre-departure filing (the new rules), is actually loaded and to be unloaded at a port in Japan, we will continue to require the shipmaster who is ultimately responsible for the information of cargo loaded on a foreign trading vessel to file as well according to the Pre-arrival filing (the current rules).

In order to reduce administrative workload on filing, the filed cargo information in the Pre-departure filing (the new rules) will be able to be reused on NACCS as part of the cargo information required in the Pre-arrival filing (the current rules) as a new procedure.