If you mind control an enemy unit that deploys into a building that grants access to superweapons, the superweapons won't become available when you deploy the unit. This appears to be only an issue when transfering the mind-control link from a vehicle to building, as access to superweapons is granted as expected if such building is mind-controlled directly. Likewise, before the fix that allows mind-control link to be transfered on deploy, access to superweapons was granted as expected as the building ownership was also permanently transfered.
If you mind control an enemy unit that deploys into a building that grants access to superweapons, the superweapons won't become available when you deploy the unit. This appears to be only an issue when transfering the mind-control link from a vehicle to building, as access to superweapons is granted as expected if such building is mind-controlled directly. Likewise, before the fix that allows mind-control link to be transfered on deploy, access to superweapons was granted as expected as the building ownership was also permanently transfered.