I have bought a new pc and configured the account on MS Outlook. I already
had this account running in Outlook Express and after i had it configured in
Outlook i imported data from the express but, some emails changed the
received data to the data of importation ( please forgive my english). They
aren't duplicate, just changed the data/time to the data/time of my import.

If someone knows what is is please tell me.

RP