For background, the proposed amendment in the bill to proposed section 49.1 models a provision that already exists in the Criminal Code in subsection 719(3.2). That requires a court to place on the record of the case and in the warrant of committal any credit for pre-sentence custody that is credited at sentencing. The language that's used in English is, “any credit” that is to be given by the Youth Justice Court as opposed to what the motion is presenting, which is, “the credit”.
Perhaps that could be read as stronger language, almost mandating that credit be provided when it's not mandatory to provide credit for any time spent in detention prior to sentencing. The proposed motion removes some of the French language regarding if it is decided to give credit; that would be the difference. Maybe what the motion is proposing is something a little more direct about giving credit for time spent in detention, as opposed to the nuance of if any credit is given.