TIG, would you be willing to share your example of how to do this with me? I am looking for a way to do this exact thing as well. Generate a .csv report of dynamic attribute values, open and edit in excel, and then update the values back into sketchup. I don't know a ton about ruby at this point, and while I am not opposed to learning, I would be much obliged if you might consider helping me down the path a bit.
Thanks!