What exactly do you mean pre-conversation?Nope.
Got unsubscribed from all threads PC (pre conversion) - which sucks, really but is what it is.
Side note, some people just want to be thread police. If Wayne wants a rule, or set of rules re: for no thread bumping, aged threads, etc we would probably know about it. I have some fun when people bump old threads, but it is not verboten, even if added content is fairly useless.