Why doesn't "Update Now" make changes in some distribution lists?

[Guest]

For some time now I've noticed that when I make changes to email addresses in
my contacts and then click "Update Now" in my distribution lists, in some
lists the changes are made and in others they're not; I have to manually
delete the old one and re-enter the new one. I can't figure out why the
"Update Now" feature isn't working in some of them; I couldn't find any
settings that control such features. If anyone knows how to fix this, please
advise.

 

[Brian Tillman]

For some time now I've noticed that when I make changes to email
addresses in my contacts and then click "Update Now" in my
distribution lists, in some lists the changes are made and in others
they're not; I have to manually delete the old one and re-enter the
new one. I can't figure out why the "Update Now" feature isn't
working in some of them; I couldn't find any settings that control
such features. If anyone knows how to fix this, please advise.

According to people I expect really know, the "Update Now" process has never
been reliable.

 

[Russ Valentine [MVP-Outlook]]

I got it to work once. It seems to work only if both the DL and its members
were created in that same Outlook profile.