I was not in alpha, but I suspect they will "buy back" the dupes and give you credit or unlock up to x amount based upon some measure of progression.
Someone mentioned that dupes will be turned into in game currency points, something like 200 per bulletin.
A now commander would cost like 20 000 currency points, so you can't abuse the system.
It would be cool if I could scrap bulletins for units that I never use, like the Brumbar/Panther/B4/USI/IS-2.
It would also be cool if you could craft the bulletin that you wanted, or combine 2 to make a new one, etc etc