That is a bit clearer. As I read it, X1 was indexing only the 2013 mail.
I suspect something odd in the nature of the 2012 file and how you created it. For example, simply renaming an existing PST files is likely to confuse the Mail Profile.
Don't forget that the name of the file is not necessarily the name that you will see within Outlook.
If you open the Profile, look at the data files associated with it. If you then remove the one for 2012, the add it back in by browsing to the files, maybe it will reestablish a connection.
I suspect something odd in the nature of the 2012 file and how you created it. For example, simply renaming an existing PST files is likely to confuse the Mail Profile.
Don't forget that the name of the file is not necessarily the name that you will see within Outlook.
If you open the Profile, look at the data files associated with it. If you then remove the one for 2012, the add it back in by browsing to the files, maybe it will reestablish a connection.