User blog:Bo-Katan/Thawne and Time Remnants

Okay can somebody please explain to me how the whole time remnant thing works with Eobard? I thought I understood but now I'm just confused. He got erased by Eddie, and then a younger version shows up in 2016 even though in his timeline The Flash didn't exist in 2016. And then Barry creates Flashpoint, but then lets Eobard fix it. But then instead of fulfilling his destiny as Wells, Eobard takes Barry to the present and goes on to create the Legion of Doom. But his life as Wells still happened to everyone else and he remembers it? But then Black Flash erases him again, but then he somehow shows up again for Crisis on Earth-X. I'm so confused.