We have subcontracted a firm to do HSI work and they use Jack as the main software. We model everything in Rhino and are not familiar at all with Jack import abilities. Since we are to provide the equipment and space models, what is the best 3d format (CAD or polygonal) that Jack is able to import with minimum rework in terms of object names, layers, part hierarchy, etc.? Rhino can export in many formats but some of them won't keep names, or become just a big mesh with no individual parts which makes impossible to work with them afterwards. Has anybody gone through that process and found the best solution?