Spawn Prefab inside another Prefab

I have a Prefab of a Door, it has a Prefab called GameTag as a child.

However, when I create the door prefab and Spawn it for the network, the GameTag prefab inside it is not spawned as well.

Both the Door and GameTag are registered spawnable objects and I can spawn them seperately just fine. But if GameTag is set as a child of the Door prefab it won't spawn with it, it will only appear locally.

Will I have to loop every time I spawn an object and spawn any prefab children as well or is there a less messy way?