Sorry, thanks for explaining what semi means lol. Why did you change your light schedule? If you change must be a reason, correct? There is no such thing as semi automatic by definition its automatic. Now if you want to say its "like" auto that is a more accurate. Automatic means you dont need to change the light schedule. Why dont you leave the light schedule the same? Grow them at the same light schedule and then show me. You're showing me something you grow like a photo. That means nothing as far as auto evidence.
I think there are some possibilities for these "semi-autos". One of them i think you would not agree can be called semi-auto and i think one hypothesis you would say, yes it is semi-auto. I cant be sure which one is true or if something else is true, but these are some hypothesis i have come to over the years.
Ill explain something about pure auto and photo first, so that it all makes sense.
Autos start to produce enough of these flower inducing hormones regardless of light cycle enough for it to both start flowering and continue to flower until its finished.
Photos however dont produce this on their own much, they might make enough to show sex during vegging, but thats about it. However dark time induces production of these hormones and some strains require different amounts of darkness to either start flowering or to continue to develop through different phases of flowering properly and not get stuck on preflower or early flowering phases.
Now when it comes to these semi-autos, it gets trickier, because its a mixture of these, but the starting of flowering and its phases are more like threshold level things.
The thing is that they obviously do produce more of these flowering hormones than regular photos with less darkness, but not enough to hit all the development changes that have higher threshold for being triggered unless you at some point give more hours of darkness.
Is this because the plant automatically starts to produce half the amount of the hormone that causes flowering, so that its enough to start and a bit more, but still requires some darkness to continue developing through the developmental phases?
Or is it because it produces more of the hormone when it does get darkness, therefore being able to produce enough to go through these phases with for example 16/8 lights?
Or is it maybe because these thresholds have been lowered?
... It's starting to stray a little off topic ... Debate is all good - there's been no name calling (yet haha) 
when we're all friends!! 
