Calendar export/import formatting problem

Hi, I exported an entire Outlook Identity (using 14.4.7) to an .olm file recently, and noticed that older Calendar items lost their formatting - the body of the calendar events lost all line breaks.  So instead of having it look correct like this:

Line 1

Line 2

Line 3

It imported like this:

Line 1 Line 2 Line 3

So I went back to the old Identity to see if the problem existed there or not, and all the calendar items look fine in that Identity - no formatting problems. I also checked an older backup of that one and it was also fine.  So I tried exporting again but this time only the Calendar items.  I then loaded the new Identity, re-imported, and the same problem occurred.  Again, only with older items, but these aren't just old appointments that i can delete. They are informational entries with a lot of text in the body of the event's window pane that i need to reference quite often.

Is there anything else i can do? There's too many over the course of years to copy/paste the text from each one.

I'd like to note that i have seen the same type of problem happen in older versions of Outlook where once in a while I would save an email message draft, close it, and when i'd re-open it later all the formatting would be stripped.  Seems like a bug.

thanks