[Exim] log_rewrites-log-entries look strange

Hello,

I've switched today the log_rewrites-option on, to see which of my
dozens of rewrites are still needed. And in the logfile those
log_rewrites-entries look strange to me, since it is logged twice. One
without Message-ID (which is the wrong entry, in my opinion) and one
with message id:

2001-07-30 15:51:31 "froemmel@???" rewritten as \
"froemmel@???" by rule 1
2001-07-30 15:51:32 15RDSF-0003Ef-00 \
"froemmel@???" rewritten \
as "froemmel@???" by rule 1

This rule one is just a simple "*@abandoned.domain $1@???" in the
config. I didn't found any point in the source, where this could happen.
Or has the first rewrite no message-id ?

regards
Christian
--
Mailadministrator of the Clinic of Medicine "Benjamin Franklin" Berlin.