When producing a georeferenced scene in Contextcapture in OBJ, CC generates a metadata XML file, but it is not read by CC viewer, nor by MicroStation.
Other softwares have such ability and each use their different approaches how to write SRS and its origin coordinates like .fwt world, .prj., .lua for OBJ. Metadata.xml could be Bentley approach how not to lose georeference when exporting/importing OBJ.