This is still very much an issue.
I've had BA change and reissue a ticket for next June. CVV provided when I made the request but wasn't ticketed in time. Since then, I've received two emails from BA asking that I call in for an issue with my ticket - done that twice, and still not ticketed in time.
I'm not particularly stressed as there's lots of time and I know the issue, but it is annoying. I have a long layover in LHR later this week, so will try and get this taken care of by an agent there.