You can import maps from other formats into AutoCAD Map 3D. The imported data is brought into the current drawing and the geometry is converted to drawing objects . The attribute data and display options associated with the objects can also be imported.
When you directly access data through FDO (using Data Connect), you make all edits and changes directly to the source. When you import data, you bring in a copy of the data and you cut the connection to the data source. Your changes are made only to the copy in your map.