Vesting Schedules and Forfeitures
401(k) plans from corporations like Management analysis & utilization, Inc. often have employer contribution vesting schedules. That means some of the employer contributions may be unvested at the time of divorce. In your QDRO, only vested balances should be divided—unless the parties agree otherwise.
If the divorce occurred before full vesting, nonvested employer contributions typically revert back to the plan and are not available to be divided. Make sure your QDRO specifically limits division to the vested account balance to avoid delays or rejections.

