I really have a beef with this card. Flavor.

Agendas are projects that require time and investment of the Corp. This is represented by the Clicks and credits needed to Score. The bigger the Agenda, the more time and investment you need. The Corp just don't simply "acquire" all the needed equipment, infrastructure and staff needed to run a Global Food Initiative just because the Corp invested time and money tracking down the runner (Breaking News), and coerce him into trading the GFI plans over.

Since the flavor of this card is to "Exchange information", it would make more sense to swap an agenda from the Corp's HQ rather than from the Corp's scoring area?

This isn't the first card that disregards "Flavor" in favour of mechanics. There are a lot. I can forgive them most of the time, because I can usually throw some loose logic to rationalise them. But there is something about this one that really sticks in my craw.

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Maybe the idea is that the process includes setting things up so the runner CAN'T steal the plans again (a sensible safeguard), so completing the agenda is a foregone conclusion. —
I think it comes back to the fogginess of "stealing". The runner has something that is holding up an older agenda. They give it back in exchange for the runner begging off some new project. Or vice versa. —
I see your point. Nevertheless I can imagine that this card is around gashlight and manipulation techniques. —
Last comen lost = ( I see your point, but I imagine that here we're dealing with Victoria Jenkins herself. The conversation could be some ambush where she manipulates the runner to make mistakes where the runner thinks that he/she/apex can get their goal in exchange or something that also took quite money to get but they're fooled. —
But if the Runner comes with their Turntable, Victoria and her executive start partying like mad. —
I like LordRandomness' suggestion. It offer a plausible account of how agenda total were earned. It will not, however, explain how agenda with triggered abilities still work (since they haven't really advanced them yet). Valerian's idea also has merit in explaining how a swapped agent has been pre-advanced, but it doesn't explain the discrepancy in advancement cost of what was traded or why the sacrificed agents still takes effect in the first place. —