; (B) shall be limited to modifications that are designed to achieve a specified aggregate financial contribution for the retiree group represented by the authorized representative (taking into consideration any cost savings implemented within the 12-month period before the date of filing of the petition with respect to the retiree group), and shall be no more than the minimum savings essential to permit the debtor to exit bankruptcy, such that confirmation of a plan of reorganization is not likely to be followed by the liquidation, or the need for further financial reorganization, of the debtor (or any successor to the debtor) in the short term; and (C) shall not be disproportionate or overly burden the retiree group, either in the amount of the cost savings sought from such group or the nature of the modifications. ; (4) in subsection (g)— (A) by striking (g) and all that follows through the semicolon at the end of paragraph (3) and inserting the following: (g) (1) If, after a period of negotiations, the trustee and the authorized representative have not reached agreement over mutually satisfactory modifications and further negotiations are not likely to produce mutually satisfactory modifications, then the trustee may file a motion seeking modifications in the payment of retiree benefits after notice and a hearing. Absent agreement of the parties, no such hearing shall be held before the expiration of the 21-day period beginning on the date on which notice of the hearing is provided to the authorized representative. Only the debtor and the authorized representative may appear and be heard at such hearing. (2) The court may grant a motion to modify the payment of retiree benefits only if, based on clear and convincing evidence— (A) the court finds that the trustee has complied with the requirements of subsection (f); (B) the court has considered alternative proposals by the authorized representative and has determined that such proposals do not meet the requirements of subsection (f)(3)(B)