Nav mesh not work in the streamed level

Hi guys! I have a little issue with the streaming of the level. I have a persistent empty layer with Level 1 and level 2 inside him. When i play the persistent level i play the Level 1(Test_Level) with a node

everythink is work but the enemy in the level is not moving ( move AI with Player_Bp like target ), i checked the green path and it is here, so i think the problem is the nav mesh, what is the problem ? What i’m doing wrong ? Thanks !