It should certainly explicitly convert from Silhouette to OGL. Not sure if they'll be explicit about the other way round (OGL > Sil), but if you can convert in one direction, then I imagine it should be possible to convert the other way too. I don't know though.
First post here, hopefully it's OK to post something like this on these boards!
I've created a Core Command Yahoo Group for discussion of Dream Pod 9's soon-to-be-released (around May 8th) space opera RPG of big guns, huge starships, daring adventures, and even bigger guns! The new Silhouette...