If I as a user were to use a WordPress theme boasting “50+ header patterns” and choose one and then write some content to fit one of these for my site, what would happen when I inevitably want to change my theme a few years later? The header pattern design code would be gone, and then what would happen to the content I created to fit my chosen header pattern? Would the matching content be deleted or would it all just be left as some kind of a mess in the header?