"Sponsor has a PS plan. Sponsor intended to merge (or terminate the existing plan and join -- it's not clear) with another group of plans and add 401k feature. Sponsor, without taking any formal action, provides distributions to all participants, mostly active employees. All happened in May of 2021. Sponsor decides not to join the other group and continue with his PS plan and also amend for 2022 by adding 401k feature. What can be done here to correct all?"