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I have not used the Inventor functionality, but the SolidWorks functionality just brings in imported features.
So, I would think that it would be the same for Inventor. The thought is that the functions in the other CAD tool are different so Pro/E might not be able to recreate it correctly.
For SW you have to go through a long process of getting your legal department and the SW legal department to agree on the terms of a use policy to use the SW Document Manager.
Hope that helps.