Can you trigger story mode upgrades mid-level?

[BiweeklyAaro]

So I want to set up a trigger that upgrades my bunkers and missle towers their improved versions available in the campaign, but it doesn't seem to be working.

I'm using: Tech Tree - Set Story Mode Tech - (Bunker) Shrike Turret upgrade level to 1 for player 1

The bunkers remain unchanged though. Anyone have any experience with this?

Thanks,