For our QA group, we have just upgraded them from Office 2010 to Office 2013 SP1. We have one user that noticed something. With Outlook 2010, the client would remember which folders he had expanded or collapsed under his "Archive" (the online archive generated by the Archiving feature of Exchange server). However, once we upgraded him to Outlook 2013, this is no longer true. Now, the "Online Archive" header is fully collapsed when he open Outlook every time.
To test, I created a small folder structure with some items in my own "Online Archive" section and was able to reproduce this behavior. Outlook 2013 will remember which folders are expanded or collapsed for the folders in my Inbox but not for the folders in my Archive. Is there a way to have Outlook 2013 remember the expand / collapse settings for the Archive?