Material change.
(B) Material change. A change in a plan's certified adjusted funding target attainment percentage constitutes a material change for a plan year if plan operations with respect to benefits that are addressed by section 436, taking into account any actual contributions and elections under section 430(f) made by the plan sponsor based on the prior certified percentage, would have been different based on the subsequent determination of the plan's adjusted funding target attainment percentage for the plan year. A change in a plan's adjusted funding target attainment percentage for a plan year can be a material change even if the only impact of the change occurs in the following plan year under the rules for determining the presumed adjusted funding target attainment percentage in that following year.