Kelie, see Richards comments, to help explain why a C3D 'drawing' or even an autocad one, might not be the only deliverable that you accept.
I think a more coherent deliverable; as you own C3D could be as simple as the FBK, descriptions keys, and figure preferences used. In this manner the 'deliverable' is or should be completely reproducible on your end from the data used. And then you can do whatever you what with it. Having a completed drawing is nice however having the data that it came from is even better.