Comment 6 for bug 896023

and mevitar's workaround actually works better because you then have the option to require the player to purchase these SWs as upgrades, similar to how the player had to purchase their support powers with generals points in generals, as opposed to having all your SWs by default on the command center.

Of course, I have no idea how this would interact with the usual Con Yard undeploy-into-MCV logic which regardless is usually seen in most YR mods. My guess would be that the building loses all upgrades and doesn't get them back, so that would be rather unfair.