(a) Except as provided in § 58.28(c), if an approved provider was not an approved provider immediately prior to the date it last obtained approval to be an approved provider, such an approved provider shall cease to be an approved provider six months from the date on which it was approved unless the United States Trustee approves an additional one year period.

(b) Except as provided in § 58.28(c), if an approved provider was an approved provider immediately prior to the date it last obtained approval to be an approved provider, such a provider shall cease to be an approved provider one year from the date on which it was last approved to be an approved provider unless the United States Trustee approves an additional one year period.