If I understand the question, yes, we have proposed that the clarifying amendment with respect to Hong Kong would have retroactive effect, and specifically that it would come into force June 19, 2013, which is the date that the Canada-Hong Kong agreement entered into effect. Because it's for greater certainty and that's how the CRA had been administering it, we thought it made sense to go back to the date that it actually did enter into force.
On December 5th, 2016. See this statement in context.