To have more than one version of edits to a raw file, x.raw, I think I would have to save a jpg with a x.vy.jpg.out.pp3 file for each version. Then if I wanted to do more work on a particular version, I would have to:
delete the x.raw.pp3,
move, say, x.v1.jpg.out.pp3 to the C:\Users\User\AppData\Local\RawTherapee\profiles folder,
open x.raw in RT,
and apply x.v1.jpg.out.pp3 using the Processing Profile Selector.
Save a separate pp3-copy of every new edit version of the raw to [folder_tree]/rawtherapee/profiles and load them to image as needed. Just give an unique name to it and that’s it. No need to delete any files, the pp3 next to raw file is just a work-in-progress-pp3.
As I understand it, there is no way to directly save just a pp3 via RT. I would have to use Windows Explorer to make a copy with a different name and then move it to profiles, correct?
If I load a pp3 from profiles, that changes the pp3 next to the raw file to be the same as the loaded pp3?
My limited experience has been that when I put a pp3 in profiles, I have to restart RT to make it available. Any way around that?