OWA and ECP virtual directories change authentication

Hello al

running Exchange 2013 RU8. I want to change the authentication settings on the /ECP virtual directory from FBA to WindowsAuthentication, however before i do this i want to make sure that changing the auth settings on the ECP virtual dir, doesn'teffect the OWA virtual dir. I know the two are tightly integrated, and i want to maintain FBA for OWA 

Thank you

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