Be default the order of priority when determining classification is as follows:
Zone > Flavor > Protocol > Init-Side
This is not desirable for all customers. As of version 3.6.0 there is an option to modify this to push the zone priority down past regular classification to:
Flavor > Protocol > Zone > Init-Side
As a result the flavour classification will take priority over Zone when determining which rules to apply.
Note: Remember to apply the configuration for the settings to take effect