Deleting Facebook But Want To Keep Contact Numbers On Windows Phone?

Does anyone know how to do this? I'm deleting my FB account but I want to be able to keep some, not all, of the phone numbers from my friends without having to manually add them all. Windows Phone automatically adds all of your FB contacts on your phone but you can't save the info without manually adding them. I went into account settings and modified in there but once FB is deleted, I don't want to lose some by accident. Thanks!|||There is no way to do that. Once deleting it on your computer you can't get it on your phone.