Shouldn't all value changes performed in DAZ main window be locked out from getting through to the Octane while the "Final" button on the Octane viewport is pressed?
I'm not that mad about losing the progress as the image already looked fine and I did make a save of both tone-mapped and unmapped versions before changing the values but still

Maybe it is not a bug and it should work like that, but there is a remote chance that it may be a bug so I'm letting you know...