We have a client that is currently utilizing a 2 month eligibility requirement. They are changing the eligibility requirement to 12 months effective 1/1/2022. My question is an employee hired September 1, 2021 would be eligible as of November 1, 2021. The employee begins deferrals on Nov 1, 2021. on 1/1/2022 when the eligibility requirements change would the employee then be required to wait until September 1, 2022 to begin contributions? Or would they be somewhat grandfathered in under the 2 month requirement?