I finally did get a (possibly) successful migration. Some accounts can login and others can't. Don't know why. I probably won't try to fix it, but will re-install and migrate again. Notes from this attempt:
Read 1-21BG0A and 1-2AG4ZG and used the new migrator script, installed a_mig-1.8.jar and migration-config.properties in the appropriate places.
1 New migrator script did not work on unix.
Script contained CR and LF which does no work in unix. Fixed: removed CR.