Hello Claudio, I am currently looking at this from an AEC perspective in Northern Ireland. I am part of the NI BIM Hub. It appears that this area has a number of difficulties at present from the initial research findings. Issues such as lights turning upside down and pipes going through walls have been found from the feedback from the organisations contacted. These mainly relate to coordinate problems within the IFC files. When the findings have been fully written up I will forward a link to the ensuing publication, Regards Robert