If the old entity merged into the new entity, or if its assets were transferred to the new entity, then the new would generally be treated as a successor to the old one, and therefore as the same "employer." Under such circumstances, it could simply merge the old plan into the new one, and keep on going.
The regulations under
411(d) make it clear that no participant has the ongoing right to prevent changes in investment options. If the old contracts are already owned by the participants, they could be converted into individual contracts. If money is being held in an account managed by the employer or other fiduciaries (
e.g., in a custodial account, the money could simply be transferred to the default option under the new plan. Either way, there would be no plan termination, so the distribution problems simply would not arise. And the employer would not have to file Forms 5500 for more than one plan.
-----------------------------------------
Employee benefits legal resource site