Using Carbonite 5.2.1 alpha 10, I hit 90 recently and decided to revisit Uldam to try and do some rep grinding for the silly camel mounts. In the quest window, the history tab has a right-click menu option to fetch quest data from blizzard's server. This appears to do nothing at all.
Carbonite seems to think I've never done any quests here, which is understandable since I nuked my history when upgrading to the alpha version, but the fetch option seems to not work to re-populate this.
Not a huge deal, but people working on loremaster will probably weep and wail.
