If you use Preferences - RAW+JPEG - Handle RAW+JPEG together checked, than RAW and JPEG are handled as 'single' file (with multiple views: raw, embedded JPEG, external jpeg) and moved/rejected/copied together
If you uncheck this setting, you'll see two files separated and can move/copy/reject only RAW or only JPG file.
If you use Preferences - RAW
If you use Preferences - RAW+JPEG - Handle RAW+JPEG together checked, than RAW and JPEG are handled as 'single' file (with multiple views: raw, embedded JPEG, external jpeg) and moved/rejected/copied together
If you uncheck this setting, you'll see two files separated and can move/copy/reject only RAW or only JPG file.
--
Alex Tutubalin/FastRawViewer team