Hi - I have a macbook air and recently updated the operating system to Yosemite (what was I thinking?). I use an MS exchange to update my work emails and keep them live - I also have local folders on my mac to reduce the file size. Office was running fine for a couple of days until this morning when upon opening outlook all my emails had disappeared in the view. Digging into it, it appears the file with the identify had moved (dont ask me how) into another folder and I have a new (blank) identity. I can see that there are emails and attachment in the relocated identity/office folder as I can search my mac, the trouble is I can't open them as it says that they are not associated with the identity. So I have over 90gb of data stored that I can't access.

Ive been able to upload some of this information from the exchange server (at least the live stuff) but I can't open the files that are originally stored on my hard drive and were originally available when I logged into my Outlook. 

I've been bounced about between Apple and the support team at Microsoft and haven't been able to find anyone that can help or shed any light on the identities. 

Would really appreciate some guidance from some bright spark out there. 

regards

F