Sorry it completely goes against the Warre system and I think it is a mess waiting to happen.
The only way I can see Flow working with Warre is to attach a normal Warre Frame top to the bottom of the Flow Frame - like a continuation only problem is when you open the Flow frame do the cells splitting affect the bottom of the Flow - ie movement of the cells perceptible or discretely enough not to disturb a Top Bar of the Warre frame
