qmake not linking QMAKE_BUNDLE_DATA to the application target (membership)

Files declared with QMAKE_BUNDLE_DATA, are added as resources to the project but they're not copied to the final bundle, because they appear as being members only of the "Qt Preprocess" target and not the "App Target".
Checking the box of membership (inside xcode target membership box) associated with the App target makes the file to be copied in the final bundle.