While the DCU is a new reset for the DC Universe of movies, the first new release brings back one villain that apparently can overcome any set back, and threaten two universes. With the transition from the DCEU to the DCU, there have been a lot of questions about what will change and what is set to stay the same. While it appears that all the Justice League actors will be recast, and the films from the DCEU have now been retired, the fact that shows like Peacemaker will have a season 1 in the DCEU and season 2 in the DCU has added a layer of confusion.

https://screenrant.com/amanda-waller-creature-commandos-return-peacemaker-ending-change-explainer/