I used CCC and I haven't seen any dings for prior accident history / rebuilt. I guess it's company policy though. Would save the insurance company millions across the country though.
Ha, I agree, a car's value decreases as it gets older yet insurance continues goes up.
Many totaled vehicles require structural work i.e. frame rail end replacements, center posts, rear body panels, etc.
You want to know how a used car dealer owned body shop does structural replacement work?
They usually don't.
For instance, a frame rail is heated with a torch until it turns cherry red while another tech is pulling on it with the frame machine, if they even have one. Modern UHSS steels are not allowed to be welded on in some cases due to heat from fatigue. These metals become very brittle and the parts are 1 time use only. Unless it was a hail damage total, not worth it.
Also a great way to learn the art of paintless dent removal while you are at it!