Ability to resume work non-destructively

[luckyluca]

Hi, I finally managed to get it all working (thank you Lukasz!)

When loading a session, existing .srt files and wav files get deleted, and the interface does not resemble the previous setup.
So for instance, if I wanted to open up an existing session and just change the voice and regenerate wav files and re-export a dubbed video, that is not possible currently.

Would it be possible to store the snapshot of the interface and audio/text settings in the json and have those settings loaded when loading?
And of course not delete existing .srt files would be nice too :)