AutoCAD Inventor :: Moving Imported Part To The Origin

We have imported an AutoCAD 3D model into Inventor and the process generates many individual Inventor parts which are placed in a new Inventor assembly. The parts are all unconstrained in the assembly but spacially positioned relative to each other as they were in the AutoCAD file.

We want to create a new, empty, assembly and place the individual parts one by one into the new assembly constraining them appropriately as we go. This way we can develop a more logical set of sub-assemblies and have the parts more intelligently connected.

So to the point of my question, at last!. Each individual part, generated from the import, contains just a single body. There is no sketch or any features. The part's origin is at the point of the original AutoCAD model's origin. All of the imported parts will have the same origin point. We want to move the part's single body in space to align with the part's origin point and planes. This way when we re-build the assembly we can use each part's origin planes when constraining the part.

There doesn't appear to be any way of constraining or 'snapping' a part's body in space to the origin planes.