In CS5, I was fairly easily able to do this by dragging a vector directly from illustrator to fireworks, but vectors drug back to illustrator would be rasterized. I recall photoshop did some of this stuff, but I don't remember so much as this use case is rarely necessary for photoshop for me. Nonetheless, Illustrator CC and Fireworks CS6 don't seem to support this feature at all.
I've always dreamt that adobe bridge would have this sort of functionality (since it's the only useful feature I could picture bridge having), but I haven't seen any evidence to support this wish.
Is there a good way to drag & drop or copy & paste vectors between the new versions of illustrator, fireworks, and photoshop? Maybe there are clipboard settings that allow this to happen or a program that accepts clipboard vectors, quickly converts them to something common like svg, then allows you to drag a temp .svg file into another program?
[by the way, I know I could just export .svg files from illustrator, then place them into a fireworks file, but this feels like an unnecessarily clunky workflow]