Is there a way to "convert selections"?

 From:  sneather
5813.1 
In my production pipeline, I often have to spend a great deal of time fine-tuning the CAD I get from my clients, before I export for animation in C4D.
One thing which is really frustrating, is the edge / surface selection process. For instance, if I want to select the edges of a large amount of engraved text, in a product. If I were in Cinema, I would simply select the surrounding surface, then tell the program to outline that selection or select just the paths. Mere seconds. But with MOI, I have yet to find any way to do something similar.

Are there any tricks or hidden quick keys for something like this?

Thanks.