When people subscribe to my newsletter, all I ask them for is an email address. When I go to send a new newsletter out, by default it checks “not specified”. This apparently does not reach people on my list (since they’re not even considered “not specified”), so I have to uncheck all 3 checkboxes and then send. However, if I uncheck all 3, hit save, and then copy the newsletter… it’s back to having the 3rd checkbox checked.
(Also, I have been unable to replicate it, but I think once I saved it, reloaded the newsletter, and then the “women” box was checked.)