I am importing mail from Domino 8 to Zimbra. I noticed that during some imports it marks a lot of them transferred messages as priority red "!" mark. But when i got into Domino the messages aren't tagged as priority red "!"

Looking at the message source on zimbra from the transferred message i noticed the message with X-Priority: 1 or X-Priority: 2 marked in the headers get marked with the red "!". But on Domino on messages marked with X-Priority: 2
have red "!" and X-Priority: 1 is not marked in Domino.

Seems on the transfer its changing X-Priority: Normal to Important

Anyone know any way to fix this?