if you not need navagation inside include - use standard ui:include. navigation between subviews - core feature of a4j:include and it's not switchable as there is not much sense in separate component which will not differs from standard without that feature.
Sorry i didn't get you..
In my facelets apllication i need a navigation from header to body on click of an action in header include.
pls just switch include of popup from a4j: to ui: include component, then if not helps - show complete code snippets.