Prefabs do not unclude in build if not created directly in app

I have prefabs created from server's network.instaniate. Its work perfectly in editor, but when i compile the app - i got a error like no such prefabs in application.

If i localy in client create prefab through GameObject.Instaniate - Network.Instaniate also work fine.

Seems compiler cut off all "unused" prefabs if they not created by local calls. Its there any way to force compiler include that prefabs in build without creating a fake clones for "hey. compiler, i need that prefabs, do not cut its off!!"?

ps. sorry for english