246.14.3. For the purposes of section 246.14.2, the amounts paid to benefit from the indexing provided for in the second paragraph of section 246.14.1 shall be refunded with interest at a rate of 6%, compounded annually and computed from the midpoint of the year during which they were paid until the first day of the month during which the refund is made.
However, for the purpose of computing the interest accrued on such amounts pursuant to the third paragraph of section 246.14.2, interest is computed up to the date on which the first payment of a pension was made.