should NetworkIdentity.sceneId be unique?

According to the docs NetworkIdentity.sceneId is "A unique identifier for NetworkIdentity objects within a scene.", however I am seeing the same id across multiple objects from the NetworkServer.SpawnObjects calls.

Code (csharp):

1. SpawnObjects sceneId:1 name:MyObjectA
2. UnityEngine.DebugLogHandler:Internal_Log(LogType, String, Object)
3. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
4. UnityEngine.Logger:Log(LogType, Object)
5. UnityEngine.Debug:Log(Object)
6. UnityEngine.Networking.NetworkServer:SpawnObjects()
7.  
8. SpawnObjects sceneId:1 name:MyObjectB
9. UnityEngine.DebugLogHandler:Internal_Log(LogType, String, Object)
10. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
11. UnityEngine.Logger:Log(LogType, Object)
12. UnityEngine.Debug:Log(Object)
13. UnityEngine.Networking.NetworkServer:SpawnObjects()

What might cause this? Thanks.

 

I'm not sure if this is normal but what appears to have fixed it for me was to force my assets to save in text mode then I set all my sceneId's back to 0 which most of them were. I have not seen this issue since (fingers crossed).