The actuarial schedules (Schedule MB and Schedules SB) are updated to reflect provisions of the Preservation of Access to Care for Medicare Beneficiaries and Pension Relief Act of 2010. The Schedule C instructions are updated to advise that for a multiemployer or multiple- employer plan, where the plan sponsor is the joint board of trustees for the plan, payments by contributing employers, directly or through an employer association, or by participating employee organizations, should be treated the same as payments by a plan sponsor. The Schedule I and Form 5500-SF instructions are updated to advise that for plans with fewer than 100 participants at the beginning of the plan year, any amount deposited with or repaid to such plan not later than the 7th business day following the day on which such amount is received by the employer or on which such amount would otherwise have been payable to the participant in cash, shall be deemed to be contributed or repaid to such plan on the earliest date on which such contributions or participant loan repayments can reasonably be segregated from the employer's general assets.