(a) With court approval.--The court, for cause shown, may authorize the combination of separate trusts with substantially similar provisions upon terms and conditions and with notice as the court shall direct notwithstanding that the trusts may have been created by separate instruments and by different persons. If necessary to protect possibly different future interests, the assets shall be valued at the time of the combination, and a record made of the proportionate interest of each separate trust in the combined fund.

(b) Without court approval.--A trustee may, without court approval, combine trusts that were created under the same or different instruments if the trusts have identical provisions, tax attributes and trustees.