When I export linework to adobe illustrator, version 5 would preserve the line layers, version 6 is not giving me that option!!! What do I do?
As a work-around, have you tried exporting to the PDF format?
(I don’t have Illustrator to check… but a simple file saved to the ai format seemed to round-trip Rhino to Rhino without problems).
Can you send me the model you’re exporting to AI along with the settings you’re using? Output from V5 and V6 would be handy but is not necessary.
The AI export code, to my knowledge has changed minimally, if it has changed at all between 5 and 6 so it would be good to see what’s going on here.