We have a mailing list on 1.8b.  Formats for that mailing list look like this:
 
[log in to unmask] Mark London
1AAAyJCx18
 
We have to move the list.  I can only find a 1.8a site to go to.  However, I'm
not sure if they can accept this format, as they have user profiles that start
with RS followed by numbers.  Is there a way to convert back to this format?
Thanks.
 
Mark