Good that you got it worked out. Rhino is very good at reading and writing different formats - I would be lost without it. For the most part it’s done very, very well.
I’m sure that was a pain and makes one wonder why they have to go through such hoops as that:-) One app which does everything exceptionally well and is a breeze to use…until then it seems having a good collection of them is the only way to get projects done.