A district blackout knocked out my Outlook identity. This has happened before, so I knew how to rebuild the identity and restore all emails. This time I chose the last modified identity - November 11.2014, but now have a gap in emails between that date and June 1. 2015. So that idenity could not have been the last one in use.

My MS Database Utility has 28 identities listed, including 7 New Identity and the rest Main Identity, so it's difficult to know which one was the one in use yesterday when Outlook was lost. How can I tell which identity to use to rebuild the database? And can I delete all the others?

In addition to this list, my Documents folder has Office 2011 Identities and two copies. How many of these are redundant and can be deleted?