> How do I changed the modified date to equal the recevied date in Outlook
> 2007 using Exchange 2007. My modified date has been affected as we just
> conducted a migration, therefore, archiving is failing due to the
> incorrect modified date.
You don't.
If you need to archive, either do it manually, or move the messages you want
to archive in a different folder and autoarchive that folder with different
settings.
Personally, I'd do it manually. Add the Modified Date to the view, sort by
it and manually drag/drop the items to the PST I'm archiving to.

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f.h.