Bug 438856

SUMMARY
I worked with digiKam 7.3.0 snapshot 17.6.2021 on a Windows 10 system.

In Showfoto I opened a *.orf image from a directory that also contains the converted *.dng file and also an *.jpg image.
Opening the DNG-Converter it loads the *.orf and also the *.dng file.
It does not load the *.jpg file, which makes sense for me.

Starting the conversion it also tries to convert the *.dng image again into a *.dng file.
Does this make sense?

In case of starting the conversion of the *.orf-image and
- the converted *.dng file does exist inside the directory and
- checkbox "store image with other filename" is checked
I get an error that the converted dng-image could not be stored:
  "Failed to save image"

For me this is an error because the above mentioned checkbox is checked.
The converted file remains in directory with name:
  .digikam-dngconverter-tmp-<date><filename>.ORF

STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION