There are two commands for moving AutoCAD data between a geospatial program (such as ESRI or Mapinfo) and Civil 3D/Map 3D - they are Mapexport and Mapimport.
To move data between systems:
- Type Mapexport and include the Layer in the attribute on export.
- Type Mapimport and click on Drawing Layer and selecting to use the layer field for the AutoCAD layers on import.
To export AutoCAD data (with or without object attributes included):
- ensure your data is in the right location and with the right layers and attributes included
- you can include a co-ordinate system
- type Mapexport at the command line. Create a file of type ESRI shp (or other) and give the file a name
- at the top of the Selection tab, select the object/s to include and the Type of data to include (you may need to do this four times to capture the four object types)
- click on the Data tab and include all the object data you want in the file (this is where you get to assign the attributes)
- click on Options to assign a co-ordinate system as required
- then Ok to create the file
For Civil 3D point data it is a two step process:
- click on the ribbon Output Tab>Export Panel>Export Civil Objects to SDF. follow the prompts and dialog boxes to make a .sdf file
- type MapImport and import this data into the drawing - make sure to tick on all the data so you get all the information outputted into the .sdf file
- type mapexport and export this Point data out to a .shp file