36At the end of section 142

36  At the end of section 142

Add:

 (5) If:

 (a) the decision reviewed by the SSAT is a care percentage decision; and

 (b) a review of a decision carried out by the AAT under the Administrative Appeals Tribunal Act 1975 has involved (wholly or partly) a review of the determination to which the care percentage decision relates;

then, despite section 43 of that Act, the AAT must not vary the decision made by the SSAT, or set that decision aside and substitute a new decision, in a way that has the effect of varying the determination or substituting a new determination.