I just changed the email address in my MyData account. Why did I get an email stating that I had been removed from the OR-Announce email list?

When an OR changes his/her email address, it automatically unsubscribes him/her from the OR-Announce list and subscribes him/her under the new address. The list is set to notify the user when s/he unsubscribes, but not when s/he subscribes.