The bill summary says:
This enactment provides for the repeal of subsections 55(5) and (6) of of the Customs Tariff and their subsequent re-enactment two years later. It also makes consequential amendments to the Canadian International Trade Tribunal Act.
Those acts have as their purpose the application of tariffs, customs and duties. The amendments that were proposed dealt with tariffs, customs and duties, so they're entirely within the scope of the bill and serve precisely the purpose that the bill was set out for.
I appreciate that you've been trying to protect your Liberal friends from having to vote on those amendments. They'd rather duck and hide than take a stand, and your rulings on those amendments have helped them to do that, but frankly, the amendments are entirely in order, as they relate directly to the bill at hand.