A trust may be modified under the Claflin doctrine if: continued compliance with the terms of the administrative or dispositive terms of the trust would defeat or substantially impair the purposes of the trust in light of changed circumstances. continued compliance with the administrative terms of the trust would defeat or substantially impair the purposes of the trust in light of changed circumstances. all beneficiaries consent to a modification and the modification would not be contrary to a material purpose of the settlor. Quiz saved at 4:40pm most beneficiaries consent to a modification and the modification would not be contrary to a material purpose of the settlo