What is the correct setting for keeping original the names when converting RAW files? When I try the default "Document Name" it replaces the first letter of the original file number with an underscore (_). In place of P1010036.RW2, for instance, it provides _1010036.dng. To me an underscore is a less than ideal as they way to start a file name.
None of the other options seem appropriate. All the assorted serial number options are shorter than the serial numbers of the original Panasonic files.
Suggestions much appreciated.