AUTO PLANT - MODEL FILES

Hello,

I am new to Auto Plant V8i and having to work with JSM files (data exported from Auto Plant) supplied by our client.

I have tried i-Model Composer and Bentley Navigator to import and publish i-models from the JSM files.  I have learned that the resulting i-models are very limited to just mark-ups and viewing.  But having viewable data is not enough for design purposes.  Is it possible to re-create a base model from JSM files such as a *.dwg formatted model file that can be opened directly in Auto Plant?