I have three inboxes in use on my Outlook 2011. Two are gmail IMAP accounts, the third is an Exchange account. Usually, the Inbox on the top left has Subfolders for each email inbox in use. 

When I hit the send/receive butting, these subfolders disappear and I am left with only ONE inbox. If I exit out of Outlook and reopen, the missing folders reappear. 

How do I correct this?