Well, I'm still here, so maybe I can comment on that

I do not believe that the DROP benefits can be treated as a "transfer from one component plan to another." The defined benefit component of the plan does not
have any liability to pay that year's benefit distribution if the employee is still working. Indeed, the previous actuarial funding for the defined benefit portion of the plan will have been based in part on an assumption that not every employee will retire at the earliest possible time. The employer contributions in the past will have been reduced to reflect the actuarial advantage to the plan when some employees stay later than normal retirement date. Thus, the DROP component involves the creation of a new liability (one measured by an annual contribution plus earnings based on the performance of a defined contribution account) with new funding, not the transfer of a liability from the defined benefit component of the plan to the defined contribution portion.
The DROP feature also involves employer contributions to fund that new liability, assuming that there are any contributions to the defined benefit plan as a whole. In calculating the actuarially required contributions to fund the plan, the actuaries must count both the defined contribution and defined benefit liabilities. The liability on the defined benefit side is measured by the present value of the future benefit to be paid, taking into account turnover, mortality, earnings, and other assumptions. But the liability on the defined contribution side is exactly equal to the contribution. Thus, if the employer continues the same level of contributions it has made in the past, what it is really doing is lowering the contributions to the defined benefit component, and making new contributions to the defined contribution component.
Even if there are no contributions to the plan, you may still have an annual addition if the funding is coming from forfeitures by other employees. As you know, forfeitures as well as contributions are annual additions.
The one area in which arguably there are no annual additions arises when the plan is overfunded, and surplus is used to fund the benefit. However, in the private employer context, the IRS has treated a transfer of assets from a defined benefit plan to a defined contribution plan as representing the termination of a portion of the defined beneefit plan, a reversion of assets to the employer, and then a recontribution of the same assets to the defined contribution plan. Obviously, there remain questions as to <nobr>(a) whether</nobr> this reasoning would apply to a public plan, and <nobr>(B) whether</nobr> it would apply to a transfer
between components in a single plan, as opposed to a transfer between plans. However, I don't believe it is 100% safe to assume even where there are no employer contributions to the plan that there is no annual addition.
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