I’d have to review your project to understand exactly what you did.
It’s highly likely, since it’s a bush strip with no taxiway, that it considers your network to be a part of the airport. Even if not part of the airport, maybe it doesn’t care since there’s not another network there. It kind of all depends on how you defined what you did.
If the airport had a taxi network, however, your process probably won’t work. IOW, you wouldn’t see AI aircraft use your network. Maybe?, as long as you had a full network including runway taxiway. I’d be worried about the consistency of the system, however.
I don’t know how to create a project and get all the existing airport information / layout through the Scenery Editor so I can just move things around. It’s super simple for me using ADE. As I noted, once I create the project, I open it in the scenery editor and take it from there. I do NOT turn on two-way edit in ADE, I think that has the potential to causes problems. Plus, I don’t want to have to learn the ins and outs of two editing tools.