Hi Ben Frost
Thanks for your answer. We are in final phase of analysys of translation procedures involving AC in a professional environment running both PDS and PDMS which are very expensive packs for modelling pipes, tubes and a lot of interferences but their lack of a civil tools to deal with architecture is a problem. As Microstation is the basis of all possible translation, we have to work on all problems generated by AC in the desired workflow. WE have recently seem a demonstration of Tekla structural ( Gorgeous piece of Human Intelligenece) despite it is a very xpensive pack. Of course, their staff was not aware of Archicad´s BIM integration with Tekla. They clerly declared AC 10 was not a big deal from them.(weird, since there´s a link at Graphisoft´s web page pointing its compatibility.
In 20 years of CAD experience, mostly industrial, I have never seen a pack like AC 10, easy of use, and most of all, very stimulatting to learn. This is a reason we want to use it instead of Revit ( which writes and reads dgn files naturally). Let´s see what happens on close future.