Wrong MIME to CD conversion

Beginning with R8, our mails coming from Monster are plagued by a bad conversion from MIME to Rich Text format.

The mail encoding states UTF-8. The display is good in Notes client if I don’t convert to RT. But when the Body is converted (through router task, or LScript), this is what I get :

Ce CV vous a été transféré

Accented characters are badly interpreted.

It seems like the converter puts a Western encoding on an UTF-8 text.

I’ve been playing much with the configuration doc, MIME tab. And the converter debug. No luck. If I switch back to a R7 server, all is nice.

I am really lost now, I would really appreciate some help ?