Hawaii Revised Statutes Division 3. Property; Family § 554D-417

After notice to the qualified beneficiaries, a trustee may combine two or more trusts into a single trust or divide a trust into two or more separate trusts, if the result does not impair rights of any beneficiary or adversely affect achievement of the purposes of the trust. Two or more trusts may be combined into a single trust if the interests of each beneficiary in the trust resulting from the combination are substantially the same as the combined interests of the beneficiary in the trusts before the combination. The terms of each new trust created by a division under this section shall provide, in the aggregate, for the same succession of interests and beneficiaries as are provided in the original trust.