@DarklordVor well dolly was used to test clone network at early stage. So maybe dolly memory and experience in this early stage clone network carried over when 'misaka network' have been established. Maybe that why misaka #10032 seems to have 'deja vu'
Original Dolly will always be gone but in a way this younger sister with all her memories will carry on her existence and hopefully live a full life. I hope we see her again someday.