Question: How to get a generic horse (not part of the mod) to use a Home Stable?

[JohnnyQuest101]

On one of the homes I made the generic horse did teleport inside the horse stable. With that home I placed a xmarkerheading inside the stable then linked it to the exterior location. It worked. Now I'm trying to do the same thing with another mod and it doesn't work. The horse doesn't spawn inside the stable. It spawns always outside the stable. The stable is navmeshed, and there is plenty of room.

I'm not sure how to get the horse to teleport inside the stable. Does anyone know how to do this with a generic horse (not part of the house mod)?

[JohnnyQuest101]

I found it. I did have the exterior cell name. Conflict with custom horse mod and Immersive Horses. I need to change the custom horse so that it works with Immersive Horses.