Up until a few hours ago this didn't work.Every "reply" that you click on adds the text of that thread to the reply box at the end of the page. If you move to another page and hit "reply", it takes the reply box from the previous page (and any previous quoted text) and adds the next one, too.
So, I wasn't even going to log in here today, but: a) all options for PMs (called ‘conversations’) have now changed automatically to ‘send an email whenever anything happens’.
Also, we've lost the special view for Visitor Messages. Before, I was able to follow my conversations with other posters and see all the essages we'd exchanged, isolated from the rest, in a separate page. Is that going to come back?