The INRAP (French National Institute of Research in Preventive Archaeology) is the leading institution in France for preventive archaeology. Every year, thousands of acres are scientifically excavated and documented by its archaeologists. Our team is operating in the La Courneuve base, North-East of Paris. After several years of producing 3D models of the monitored excavations, we ended up with a lot of 3D data, on a lot of different computers, DVDs or external hard disks. As this filing method was very disorganized, risky and not easily searchable, it seemed to be a good idea to start thinking about a proper way to classify and save the 3D data before losing some of it and to avoid the older to sink into oblivion.