Consider the following premises. For all z, if z were a janitor, then z is an artist. For all z, if z were an artist, then z is a janitor. There is at least one z for which if z were a janitor, then z is making tea. Can we infer the following from them? For all z, the fact that z were an artist does not imply that z is making tea.
That contradicts the premises. Therefore the answer is no.