why is autoretreat applied to one factory also automatically applying to another factory I made later? Is there a way to turn this off?

I made a tank factory in the beginning of the game. I set it on autoretreat (at 30 percent). Later I build an amph plate to counter the large amount of scalpels with limpets. But the problem was that the autoretreat I applied to the tank factory also automatically applied to the amph plate. I didn't realize this would happen.

So when I send the limpets at the scalpels unfortunately it was on retreat at 30 percent and retreated when they were slightly damaged thus ruining the whole plan.

Factory inheriting from constructor seems like the wrong default in that case.