New transcription run in another language on selected text of an existing transcript

I regularly have to manage transcript of multi-lingual audio.
Up to now, Sonix multilingual feature (beta) does not produce very good results in my cases, forcing me to transcribe audio clip in the other language and then replace the text in the transcript. I use the clip feature to extract the concerned text, and reprocess it nice. However, this means many small steps: select the text, make clip, download the clip,, upload the clip, select the correct language, select copy the text in the clip transcript, and paste it in the main transcript, realign time codes.
It would be nice to offer directly a “transcribe audio in another language” for the selected text only.