My Ai character is not moving

So I have this nav mesh below my Ai and there is another nav mesh, lets call it nav mesh 2, that I have created in a different location. If I have that nav mesh 2 on the scene, My Ai character moves fine, however when I delete that nav mesh 2,(the nav mesh placed in a different location), my Ai character suddenly stops moving even though I have a nav mesh below it. Then if I undo the delete, my Ai moves again.

BUT if I delete the nav mesh under my AI while still having the nav mesh in the other location, my AI is still moving.
I cant seem to understand why that is happening.

Here is a video showing the exact problem:

Thank you in advance.