For my last 3 computers, I have always saved the mailbox files from Outlook
Express to a CD, then imported them into each newer computer's Outlook
Express, under a separate OE identity (like "oldmail", or
"mails2002_2004").. The imported messages have come from OE5 and also, I
believe, older versions of OE.

What I always find is that OE successfully imports a number of messages into
each mailbox. Then at some point OE begins dropping the info as to sender
and subject. The messages are imported, but now sender or subject appears in
the mailbox view, and when I open the messages they say (unspecified sender)
and (no subject). The problem is that, while it's good that I still have the
messages, it is difficult to search for the old mails when I need them,
without searchable sender and subject fields.

This problem only happens with large mailboxes. Some of these mailboxes
contain many messages, and many attachments.

I have tried trial versions of a couple of OE mailbox repair utilities, but
none of them have fixed this issue. This has happened more than once -- it
happens every time I import my old mailboxes, into each new computer.

Any ideas, please, about how I may more fully recover these messages, so as
to be able to read and search the sender and subject info?

I assume that as a preventive, next time I should split large mailboxes into
smaller ones before saving to CD, but I am hoping there's a way I can more
repair and fully read the data on the messages already imported.

Thanks...