I just migrated 8 users from Gmail to Office 365 Online Exchange. Everything went swimmingly well for all accounts except one. Strangely, the accounts with unbelievably large folders and subfolders had no problem populating their users Outlook 2010 and 2013 installations. Just this one account with very little email but some nested subfolders beneath the Inbox is having problems. I used the built-in migration tool in Office 365 with success in all cases. However, although this user has access to all her email when logged into the portal, nothing I do seems to get email into those subfolders in Outlook.
Here's some things I've tried. I've tried exporting to a .pst file in the Gmail account. Unfortunately the .pst file has no messages in the subfolders (I seem to remember this as a feature of gmail imap.) I've tried moving the messages in the Inbox (it's pretty little) into a subfolder online and moving the subfolder messages down to the local PC through the inbox. The messages came down to the inbox but disappear when I try to move them into the subfolder! I've not only recreated the profile but I just added the profile to my own office PC running Windows 8.1 and Outlook 2013 and am getting the same result.
There must be a way to do this. I'm embarrassed at the moment and hope someone can help!