Configuring preferences and options in Outlook.com
Office 365 personal user here.
I checked on Friday and there was a third section under Premium that had "Personalized Email Address". This is different than it was previously as it was under the features tab. But it looked like it was back in order and available to make the transfer for the domain.
I didn't have time to mess with it on Friday, so I log in today to switch everything over and guess what... The third option is no longer there and the Features tab shows "Unable to load these settings. Please try again later."
Also, I just found this out after I deleted all my records in my previous email provider and told my client that we were going to switch over.
Boo.