Games : Will under construction level 1 buildings be active in War base in clash of clans?

I know that when we are upgrading any buildings to Nth level it will be the N-1 level in war base . I recently upgraded my town hall and started to build the new defenses, but these will not be completed within the preparation time. But when I edit my war base I can see the fully built defenses.

So on war day will the defenses be active or will it leave a blind spot (holes in between buildings so that enemy can deploy troops)