In the config settings, there are global options (applies to everything globally), model options (applies to specific models), and trainer options.
Do the trainer options apply regardless of model used (meaning, the "Original" trainer has nothing to do with the "Original" model other than the fact that they were the first ones released), or do those options apply selectively? I assume it applies to all models, but I thought I'd ask, to determine if it's worth manually adding some horizontally-flipped sections when I pre-edit my source videos... like, if the subject is mostly front-facing, but glances to the left a few times, I might want to duplicate the "glance" clips with a h-flip if the trainer doesn't already do that in all cases. I guess it might be worth doing anyway, if I want the trainer to have a slightly higher chance of selecting a "side-glance" frame, to better round out the training data.