[4.7.6] How to use NavLink?

Ive been trying to get NavLinkProxys to work in my map.

The project has a basic wander code that sets a move goal via GetRandomPointInRadius(), which is then used when calling MoveToLocation().

I set up an enclosed spawn room, with a ramp leading through an opening in one of the walls that a player can then drop out the other side into another room.
Dropping from the opening is the only way out.

I then placed a NavLinkProxy, set it to Left to Right, and moved the Left point to the opening and the Right point to the floor of the second room.

During testing the AI makes it up the ramp, but then just stands there.
Ive tried using “Simple Link”, Smart Link", toggling Auto Activation. Nothing seems to work.

How do I get this to work?