Hi Angleo, yes for AI export you probably won't want to write just an entire set of 3D objects to the AI file because you'll get things like duplicated curves because you'll get both front & back edges and things like that.

So you (or your young assistant...) would need to do things like select just the front edges from a slab and then use File / Export which will write just those edges to an AI file and then repeat that for each slab.

One thing that can help with that is that you could select one edge by clicking, and then use a window select to capture other edges - if you did the window select in the Top view you would be able to capture all the edges on the front side of one of those slabs with one strategic window select.

- Michael