Custom Load Map Navigation System


I create my own basic Load Map for loading level and sub levels with a Transision level, i use PrepareMapChange and CommitMapChange and works very well, the problem comes when i try to move with the Navigation System, it not works. Its not a problem of static Nav mesh because if i use OpenLevel o ServerTravel with the same map it works but with my code the navigation is not working. I think its because with CommitMapChange the Navgation System its not loaded and not spawned so it never creates. I want to ask if anyone can help me with how can i load the nav system with CommitMapChange