I think you misunderstood and missed the highlight portion below:
This file system has a balanced management of Flash, which means it is NOT writing to the same physical address.
Our application determines whether the configuration has been modified, and if not modified, it will not be saved.
I’m genuinely trying to understand this.
It seems to me that the configuration changes almost immediately after powering on. The settings are probably adjusted right away—that's just how it goes.
I’m willing to believe that the configuration is stored in RAM, although Siglent doesn’t say that at all in their response. And how do you quickly save it to Flash during a power-down?
After that, I don’t understand what problem Siglent thought they were solving with this option. I could already choose to use the last configuration at startup.
And now Siglent is even saying that in the next update, this new feature can be turned off again.
( sake of the discussion, nothing more.)
Actually, that highlighted in bold statement was precisely what I was trying to get across to IM3. I thought rewording it might help convey the meaning of Siglent's message.
A reverse variant of all the alternative descriptions used by the disgruntled customer in the Monty Python "Dead Parrot" sketch as in "This flash won't be joining the choir invisible any time soon". 
Tone can be hard to discern in written text, and it’s possible you intended it as humor rather than criticism. But it might also carry an undertone of "explaining things to someone who doesn’t get it."
And that doesn’t feel right, especially when Tautech follows up with a “Thanks.”
That shouldn’t be the tone we have here.