I am using IMAP with our company mail server, also have access to Webmail.  My Mac is on OSX 10.9.4 and Outlook is 14.4.3

I recently created a new sub folder to organize a large number of important emails.  I moved approx 100-150 emails from the inbox, sent items and other sub folders to this newly created folder. (something I have done many times before)  When I clicked into the new folder I saw all the emails were there briefly, and witnessed them disappear before my eyes.

I immediately checked all the folders I had just moved the items from, as well as the deleted items to no avail.  I then logged on to the Webmail client and searched there.  Nothing! 

Any other ideas would be helpful...