In Zimbra my Yahoo sent items only go back to the 18th of June.

I've been using this app for over a year and this yahoo account for 10 years so I'm fairly certain I've sent messages before June 18th

First I thought maybe this was just some Zimbra option but just now I checked Gmail and I had sent items going back to '07. So this is something specific with Yahoo. Does anyone have any ideas?

My second problem, yahoo again lol

It's not showing me messages in "conversation mode" or whatever you call it like this screenshot from my Gmail account in Zimbra.

I was sure Yahoo was doing this until a few days ago, but maybe I'm crazy?...