47.5. The amounts referred to in section 47.4 are the following:(a) the amount by which the aggregate of all amounts allocated to the individual or a deceased person of whom the individual is a legatee by particular title or legal representative, by a trustee of the plan at a time when the plan was an employee trust, exceeds the aggregate of all amounts previously paid out of the plan to or for the benefit of the individual or the deceased person at that time; and
(b) the portion of the amount by which the cost amount to the plan of its property immediately before it ceased to be an employee trust exceeds the liabilities of the plan at that time that the amount determined under paragraph a in respect of the individual is of the aggregate of amounts determined under that paragraph in respect of all individuals who were beneficiaries under the plan immediately before it ceased to be an employee trust.