As you're aware, the federal government has to introduce and pass these amendments, and the provincial governments must do the same to their versions of the accord acts. The two must be brought into force at the same time to work together.
The proposal to allow for a separate coming into force gives the flexibility to ensure consistency across the impact assessment and accord act statutes. The course of action, if there is disagreement by the provincial colleagues to move forward with mirroring those amendments in their provincial versions of the accord acts, will be to not bring them into force until such time as there is provincial concurrence.
That would be the course of action.