There's a good amount of evidence showing multiple migrations out of Africa (https://doi.org/10.1016/j.cell.2020.01.012 https://doi.org/10.1016/j.cell.2020.01.0

There's a good amount of evidence showing multiple migrations out of Africa (https://doi.org/10.1016/j.cell.2020.01.012 https://doi.org/10.1016/j.cell.2020.01.012, http://dx.doi.org/10.53846/goediss-9012 http://dx.doi.org/10.53846/goediss-9012). The presence of someone who came after the oldest hypothesized migration doesn't negate previous waves.