Existing DNG files are handled as follows:

  1. When wrapping files:
    1. If the destination folder is different to the source folder, then the existing DNG file is copied to the destination, and
    2. If the destination folder is the same as the source folder, then no action is taken.
  2. When unwraping files, if a DNG file has an embedded file, it is unwrapped. If a DNG file has no embedded file:
    1. If the destination folder is different to the source folder, the file is copied, and
    2. If the destination folder is the same as the source folder, then no action is taken.