When the Brawnen purchase an advancement that says something like minions are permanently
Promoted, all minions of the
Promoted type
In Play and in the
Barracks are flipped to their
Promoted Side. For the rest of the game the affected minions cannot be selected for
Deployment on their
Basic Side, but if a game effect would put them back onto their
Basic Side, like the Architect's Builder
Talent, the effect still resolves normally.