Bug#281128: Exim4 won't recognise trusted_users

[John Rigg]

Package: exim4
Version: 4.34-6

I've just installed exim4_4.34-6 from a sarge-i386-netinst.iso CD
(10-11-04 daily build). I've added my user name to the `trusted_users'
line in /etc/exim4/conf.d/main/02_exim4-config_options and run
update-exim4.conf (after making sure the daemon wasn't running),
but the new entry is ignored. 
The /var/lib/exim4/config.autogenerated file got updated, but where
I expect to see

trusted_users = uucp:myusername

all I see is the default `trusted_users = uucp'.
My old version of exim (4.22-5 from debian-installer Beta-1) updated
the config.autogenerated file correctly (I'm using it to send this).
I don't know if this new behaviour is a security feature or a bug. 
Is there a work-around?

John