2011

The seed file you use significantly affects the outcome of the export process.
If the design plane coordinate bounds in the seed file do not fully contain the
extents of the AutoCAD Map 3D drawing, AutoCAD Map 3D repeats the export
operation automatically using the Compute Optimal Seed File option. If the
second export operation fails, manually choose a seed file that works for your
region and coordinate system.
Export Restrictions
Closed objects are not filled, even if they were filled originally.
Hatch patterns are not exported. If you export polygon data that is hatched
in AutoCAD Map 3D, the resulting data is not filled in MicroStation.
Driver Options for DGN 7
You can set the following options when exporting DGN 7 files:
DescriptionOption
Select the coordinate units of the features: Master or Sub.
Select the unit that matches the default unit in your Auto-
Coordinate Units
CAD Map 3D drawing. For example, if the default unit in
your AutoCAD Map 3D drawing is meters, and you are
using a seed file that defines meters as the Master unit,
then select Master. The default is the Master unit.
Select the seed file, which controls whether or not the
output DGN file is two-dimensional or three-dimensional,
Seed File
sets the coordinate units, sets global origin, and so on. You
must use a version 7 DGN seed file.
Select this option to override all seed file settings and have
AutoCAD Map 3D calculate the settings for you. AutoCAD
Compute Parameters
Map 3D determines the largest dimension for the set of
exported objects and sets the appropriate range and pre-
cision. It sets the UOR per Sub to 10, and sets the Global
Origin to the center of the bounding rectangle of the ex-
ported objects.
Select this option to override the global origin setting in
the seed file. Specify the global origin to use.
Override Global Origin
1436 | Chapter 9 Publishing and Sharing Maps