Control the BOM setting from the "Convert to Assets"

You can now control the Bill of Materials settings during “Convert to Assets”. The selected option updates the Inventor Document settings.

Convert imported CAD models into factory assets using the Convert to Assets feature.

The Convert to Assets feature lets you convert imported CAD models into factory assets. If, for example, you receive component data from a supplier that you want to evaluate or run through collision detection, you can use this feature to quickly convert that data to a factory asset for placement in your layout designs.

The conversion process:

Creates an asset for each selected model
Publishes the asset to the asset library
Replaces the selected model with the newly created asset, if indicated

For more information see To Convert Assembly Components to Assets.