Marine carriers will continue to provide exactly the same information they traditionally provide. It is possible that the marine carrier will issue its 9000 Arrival Notice with the sublocation code while the goods are in transit from the foreign port and so the freight forwarder may need to Correct or Amend the sublocation code (for example) after the original eHBL has been filed. The full list of warehouse sublocation codes is here: https://www.cbsa-asfc.gc.ca/import/codes/sw-ea-eng.html?sw_province=&sw_type=