Associating Database Versions
with File Extensions
This information applies
only to drawing objects.
When you drag and drop
a database onto the Map Explorer tab of the Task Pane,
you can select the version of the database used to create the database.
By default, AutoCAD Map 3D prompts
you each time to specify the version that was used. If you created
all your databases with a specific version of the software, you
can set an option to select that version automatically.