IFC 2x3 coordination view VS coordination view 2.0

i looking for some more information about the difference between those configuration.
we use to use Coordination view 2.0 and then we understand that it block us in some place.
for example :
let say i have family A that hosted inside family B. if i export by using coordination view 2.0 i wont get any properties of family B . (see the image bellow)