I'm working on two audio books for a client, (two different stories), and each story is done in multiple languages that share the same FX and music per story. All these audio files are supplied to me. Each time I do a new language version, I create a new song file, in it's own folder, from the old version so I can use it as a template to lay in the new language against the old FX and music. (Each new language is supplied as many separate page files, which is how I can do this at all, since I'm not multilingual!)
Initially, with the first book, I was copying the whole project file into a new project but that resulted in file bloat, with all the audio files being copied over to the new language version.
With the second book, I came up with a solution to file bloat by doing some version of Save Copy or Save As (can't remember now) into a new folder named after the new language then, I think, maybe manually creating a bounce folder. Now, the only new files are the new language, which lives in it's own separate audio folder. And somehow in the process, a new undo folder was also created, one that is different from the undo folder in it's predecessor.
Now I'm back to the first story with a new language and want to do the same thing. So, I opened a version of the first story, did a Save As with "new language name" and put that into a new folder, then manually created a bounce folder in there and all is good; the song still plays all the old files, however, there is no undo folder, as there was when I did this procedure with the second book. I've tried to do some edits to the audio files but I'm not seeing an undo folder appear in the new version. What is it that creates that undo folder?