4231.3—Requirements for mergers and transfers.
        
        (a) General requirements.
         A plan sponsor may not cause a multiemployer plan to merge with one or more multiemployer plans or transfer assets or liabilities to or from another multiemployer plan unless the merger or transfer satisfies all of the following requirements:
    
    
        
        (1) 
         No participant's or beneficiary's accrued benefit is lower immediately after the effective date of the merger or transfer than the benefit immediately before that date.
    
    
        
        (2) 
         Actuarial valuations of the plans that existed before the merger or transfer have been performed in accordance with  § 4231.5.
    
    
    
        
        (i) 
         Determines that the plan meets the applicable plan solvency requirement set forth in  § 4231.6; or
    
    
        
        (ii) 
         Otherwise demonstrates that benefits under the plan are not reasonably expected to be subject to suspension under  section 4245 of ERISA.
    
    
    
        
        (b) Compliance determination.
         If a plan sponsor requests a determination that a merger or transfer that may otherwise be prohibited by  section 406(a) or (b)(2) of ERISA satisfies the requirements of  section 4231 of ERISA, the plan sponsor must submit the information described in  § 4231.9 in addition to the information required by  § 4231.8. PBGC may request additional information if necessary to determine whether a merger or transfer complies with the requirements of  section 4231 and this part. Plan sponsors are not required to request a compliance determination. Under  section 4231(c) of ERISA, if the PBGC determines that the merger or transfer complies with  section 4231 of ERISA and this part, the merger or transfer will not constitute a violation of the prohibited transaction provisions of  section 406(a) and (b)(2) of ERISA.
    
    
        
        (c) Certified change in bargaining representative.
         Transfers of assets and liabilities pursuant to a certified change in bargaining representative are governed by  section 4235 of ERISA. Plan sponsors involved in such transfers are not required to comply with this part. However, under  section 4235(f)(1) of ERISA, the plan sponsors of the plans involved in the transfer may agree to a transfer that complies with  sections 4231 and 4234 of ERISA. Plan sponsors that elect to comply with  sections 4231 and 4234 must comply with the rules in this part.