Delegate information is stored as a delegate "rule" in the owner's mailbox.
Did you exmerge the data out to .pst (before the move) or did you export
from Outlook to the .pst? If you exmerge to .pst you have an option to
keep/not keep associated messages in the mailbox. It is these "associated
messages" in the mailbox that contain things like delegate "rules".
Hope this helps.
Greg Mansius [MSFT]
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