In response to a general inquiry, CRA stated:
If a trust governed by a registered plan acquires a qualified investment that later becomes a non-qualified investment, the holder of the TFSA or the annuitant of the RRSP or RRIF will be subject to a tax equal to 50% of the fair market value of the investment at the point in time it becomes non-qualified. In this situation, the tax is refundable if the holder or annuitant disposes of the non-qualified investment before the end of the next year or at any later time the Minister of National Revenue considers reasonable given the circumstances.