2011

Select a Design Model from the DGN file
The DGN design model that you select is imported into the model space of
your current DWG file.
V8 DGN files might contain multiple design and sheet models. A DGN design
model is equivalent to model space, and a DGN sheet model is equivalent to
paper space. Because a DWG file can have only one model space, you need
to select the design model in the DGN file that you want to import.
If a design model is selected and is referenced into a sheet model, then the
sheet model is also converted as one or more layouts in the DWG file. Only
the sheet models that reference the primary design model are imported. These
sheet models are translated to paper space layouts, and will include layout
viewports that display each reference to the primary design model.
External DGN References
Controls how DGN references are handled in a DWG environment.
Any DGN files are supported as references. These file types include, but not
limited to, these extensions: .dgn, .dwg,.cel,.s,.h, .cgm,.rdl,.d files. However, DXF
files are not supported and are ignored.
Translate References to DWG Xrefs
All referenced DGN design models, including nested references, are converted
into individual DWG files and attached as xrefs in model space.
The nesting relationships of these references are maintained. DGN design
model references that reference the primary DGN design model, also called
circular references or self references, are handled by creating a separate DWG
copy of the DGN design model and attaching it to the primary DWG as an
xref. Design model references to sheet models, and sheet model references to
other sheet models are not supported and are ignored. Unique names for the
referenced DWG files are generated by appending the model name to the
design file name separated with a dash (-). If necessary, the resulting DWG
file names is truncated and one or more of the last characters might be replaced
with numerals to make the file name unique.
With the following set of options, you can choose whether or not to overwrite
external reference files:
■ Prompt to Overwrite
■ Overwrite without Prompting
■ Do Not Overwrite
550 | Chapter 5 D Commands