One of the key benefits to the MBCBP is that the company absorbs more of the risk vice a standard 401k, meaning they are on the hook to pump cash into the fund in down year(s) to make the employee whole. This is what allows it to be categorized as a defined benefit plan vice DC and coexist with 401k. This is why it had to be negotiated for over and above the standard spill cash.

So while you are correct that they will continue to fund the PRAP, perhaps a more appropriate wording on my part would have been to push to "back-fund" rather than backpay the MBCBP to what it would have been if they had actually opened the plan on a reasonable timeline.