(1) If there is a * taxable importation of a live animal that was exported, and the difference between:
(a) what would have been the value of the importation if this section did not apply; and
(b) what would have been the value of a taxable importation of the animal if it had been imported immediately before the time of the exportation;
is greater than zero, the value of the * taxable importation is an amount equal to that difference.
(2) In any other case, the value of a * taxable importation of a live animal that was exported is nil.
(3) However, this section does not apply if the ownership of the animal when it is imported is different from its ownership when it was last exported.
(4) This section has effect despite subsection 13-20(2) (which is about the value of taxable importations).