Okay that makes more sense reading about it than hearing about it.
Something to note: During the explanation of how time flowed, the narration used an example of an ant being relocated into the world that exists after the reset. Just before we see Emporio relocated after defeating Pucci, we see an ant.
It seems like Pucci's powers remixed the earth instead of reset it. We see that Jolyne and Anasui have different names but found each other. They're also drawn to Emporio and the person Hermès became as if even with different paths in this universe, it wants to reform certain connections.
Of course I can’t be sure until I read parts 7 and 8, but if this is a remix, it could explain how a Zeppeli, Brando, and Joestar end up in the same place at the same time and so forth. As for Jojos surviving into the new universe, they likely all did although under different names and possibly without Stands.
It’s interesting. It’ll take more thought and reflection. It’s equally possible that the world parts 1 - 6 became is unrelated to the world parts 7 and 8 take place in. There’s enough evidence/lack of evidence to swing either way at this point.