
The INSUNITS property on the block corresponding to the top level assembly is set to match the source file’s linear units. The original name is preserved in the block description. If this results in identically named blocks, a unique name is assigned to one of the blocks by appending the dollar character ($) to its name, along with a unique number.

If a part or assembly name is longer than the maximum block name length, the name is truncated. If a part or assembly name contains unsupported characters, in the corresponding block they are replaced by the underscore (_) character. The name of the block is the same as the name of the corresponding part or assembly in the source 3D model. Assemblies are formed by nesting "part" blocks. Individual parts are mapped to blocks, which in turn are referenced from model space. IMPORT maps parts and assemblies to blocks and block references.

To create associative drawing views of Inventor models, use the VIEWBASE command. Tip: The models you import are non associative.
