(iv) if those terms and conditions of employment provide for performance pay plans and those plans are not the same as those that were in effect on May 9, 2006 for any employees in the Law Group or the amounts or rates provided for in those plans in relation to any particular position level are not the same as those of the performance pay plans that were in effect on that date — or the plans were expressed to be retroactive — the provisions that provide for those plans are of no effect or are deemed never to have had effect, as the case may be, and are deemed to be provisions that provide, for all employees in the Law Group, as of the day that the terms and conditions of employment were established, for the same performance pay plans that w
...[+++]ere in effect on May 9, 2006 for any employees in the Law Group at the same amounts or rates, in relation to any particular position level, that were in effect on that date,
(iv) si elles prévoient un régime de rémunération au rendement différent — ou si les montants ou les taux pour un niveau de poste donné sont différents — de tout régime en vigueur le 9 mai 2006 pour des employés de ce groupe, ou si elles prévoient que le régime a un effet rétroactif, les dispositions qui le prévoient sont inopérantes ou réputées n’être jamais entrées en vigueur et sont réputées prévoir, à compter de l’établissement des conditions d’emploi, pour tous les employés du groupe, les mêmes régimes de rémunération au rendement — et les mêmes montants ou taux pour un niveau de poste donné — que ceux en vigueur le 9 mai 2006 pour des employés de ce groupe,