You can to edit the original data in its source, or import it to convert the data into AutoCAD drawing objects. Once you import data, the connection to the original source is lost. If you update the source, your changes will not appear in the imported copy.
By default, AutoCAD Map 3D considers SHP files a multi-select, file-based format, that is, you select one or more individual .shp files during a single import process. You can change the default in the mapimport.ini file so that AutoCAD Map 3D considers SHP files a folder-based format (all files in the folder are included in the import) or a single-select format (only one file can be selected for import).
When you connect to or import SHP data, AutoCAD Map 3D checks the geometry to see if there are multiple closed outer loops. If so, it treats the geometry as multi-polygon (a polygon with multiple exterior rings). It does not treat unclosed outer loops as multi-polygon.
When importing SHP files, it is important that you have the complete set of .shp, .shx, and .dbf in the same folder. The import operation will work if you have only the .shp file, but only the geometries will be imported. To import data with its geometry, you need the full set of files.
Point symbols, line styles, and fill styles are not maintained when importing from SHP files. Before the translation, put these items into one or more fields in the associated database so you can reassign the display properties of the graphical objects using these values in the drawing file.