Add a user to a list. Ensure that user has the correct permissions to use that list for white/blacklisting and/or granting/denial of permissions in their domain. Once the user has added the list to their domain and granted/denied permissions based on roles (and saved those settings), remove them from that list. Have the user check their domain settings panel. They will see that the list name remains in their domain settings, its name is visible and all ranks maintain the rights granted/denied them. The names of the ranks in that list are the only thing which will change. They will each be listed as "undefined"