Rsync replaces files newer

Rsync replaces files newer

I'm using rsync to migrate data from a server to another. Normaly it must
replace files on new server only if they are older than source files. But
i my cas it does the opposite! If I modifie a file on the source server,
so the date is newer after, and I lanch my rsync command, it replaces only
this file with the old one from the source...?? What am I missing??
Here is my command:
rsync -e ssh -avz --exclude="cache/*.*" --exclude="cache_*"
--exclude="annuair/" --exclude="homes/" --exclude=".spamassassin/"
--exclude=".usermin/" --exclude="cgi-bin/" --exclude="etc/"
--exclude="fcgi-bin/" --exclude="logs/" --exclude="Maildir/"
--exclude="tmp/" /home/mysite/ root@5.39.72.228:/home/mysite
Thanks