I just migrated MemberMouse to another server and it didn't actually carry all the members with us. You can see that all of the members are in the WP-Users interface, but they are not recognized in the "Manage Members" section. It's completely blank.
What did I do wrong?
My guess is that you didn't copy over all the membermouse tables to your database. They all start with mm_.
That is exactly what happened. For anyone else having the issue, you need to completely export the entire database from MYSQL instead of using plugins and other abbreviated methods to transfer Wordpress.