I don't think you can tell what specific objects were changed. The software always asks me if I want to update my library with the changes once I've downloaded them. I always answer yes. I NEVER connect the scanner directly to the computer unless I want to verify the firmware in the scanner. I just take out the SD micro card and plug it into the computer directly. (Much faster at updating than when installed in the scanner). Once I've allowed the computer to update the changes, I copy the library to the SD micro card. That way any changes made to the library will be made in the scanner.