The short answer is the duty-relief portion. It was imposed July 1 by the Canadian government. By August 16 we got approval, and we started immediately. Then as soon as we got duty relief, we went and started the process of doing duty drawback, and we're submitting our first submission to the CBSA this week.
Evidence of meeting #122 for International Trade in the 42nd Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was cost.
A recording is available from Parliament.