I have the same issue.
Outlook 2013 64 bit and X1 8 beta. Two Gmail IMAP accounts in my Outlook profile that did show up and were indexed with X1 6 and X1 7 no longer show up and are not indexed.
Outlook 2013 64 bit and X1 8 beta. Two Gmail IMAP accounts in my Outlook profile that did show up and were indexed with X1 6 and X1 7 no longer show up and are not indexed.