[Mailman-Users] Migrating list passwords when upgrading from 2.0.x to 2.1.x?

[Christopher Waltham]

I just migrated a Mailman installation (~800 lists, ~5000 users) from 2.1.5 on SPARC Solaris to 2.1.9 on Linux x86. In the process, it looks like existing list passwords have become corrupted.
 
Is there an easy way to migrate those passwords across? I can't find anything in the FAQs, and really really don't want to have to give 800 list admins new passwords. :-(
 
Thanks,
 
Chris