Finally! SAFE Software, has released the BETA of FME Translator that will convert AutoCAD Map 3D’s Object Data AND its associated MPOLYGONS. MPolygons enable AutoCAD Map to create Islands, Holes and Multipolygon within the AutoCAD environment. Object Data is the internal custom attributes you can add to each object (i.e. Pipe Diameter and install data on PLINE).
Now you can use FME to convert the DWG that has Object Data and MPOLYGONs into anything. In my case, Oracle Spatial!
Great News!