There are a few investments that will pass at death to the designated beneficiaries. It won't matter what your will or trust says, some items will transfer only to the beneficiaries you have listed or designated.
These particular investments include Life Insurance, Annuities, Retirement Plan Accounts and both regular IRAs and ROTH IRAs.
Those items will transfer to the beneficiaries you have designated and are recorded in the company or custodian files.
It is easy to forget to verify or update the beneficiary designations. Those should be filed with the other estate planning papers (Will, Trust, Power of Attorney forms). …