As Ms. Cox-Duquette explained and as the Federal Court agreed, that's the documentation that was already submitted and it's already on the record. Let's suppose the procedure started in English. The documentation submitted in English stays in English, even if the language of proceedings changes to French. But, from the time the language of proceedings changes to French, all the documents must be submitted in French.
On December 16th, 2010. See this statement in context.