Importing messes up Sender Info, time and date?

Just did a trial run by importing 1 folder into my Pandora Demo version.

Import went smoothly, but all 544 emails have no sender info ( as in who the email originally came from) just my first initial and last name, There's No dates on any of the emails.
And all of the emails say 8:40 AM, which was about the time I started the import from Outlook.

Help!

Thanks!