If a court of appeals reverses the trial court's judgment because of a legal error that affects only part of the damages awarded by the judgment, the affected party may - within 15 days after the court of appeals' judgment - voluntarily remit the amount that the affected party believes will cure the reversible error. A party may include in a motion for rehearing - without waiving any complaint that the court of appeals erred - a conditional request that the court accept the remittitur and affirm the trial court's judgment as reduced. If the court of appeals determines that the voluntary remittitur is not sufficient to cure the reversible error, but that remittitur is appropriate, the court must suggest a remittitur in accordance with Rule 46.3. If the remittitur is timely filed and the court of appeals determines that the voluntary remittitur cures the reversible error, then the court must accept the remittitur and reform and affirm the trial court judgment in accordance with the remittitur.