List of solved problems:

• no way to restore enrolments from disabled/nonexistent/nonrestorable plugins - solution is to add option to "Restore as manual enrolments" options which migrates data to standard enrol_manual plugin
• no way to map/alter custom fields - such as roles or userid stored in customintX fields
• roles need to be restored AFTER the enrolments because they need new enrolid
• enrol->sortorder should be converted to XML field order, we do not need the value in backup file at all
• support for multiple enrol-self instances
• trigger automatic sync of all enrol plugins before the restore of first instance - this creates course category enrolments for example, it might trigger LDAP sync, etc.
• let enrol plugins create instances, enrolments and role assignments - we need as much flexibility as possible, let plugins decide eveything

Not included in this issue:

• ability to backup/restore extra tables of enrol plugins
• only self, manual and guest plugins are fully implemented, the rest will follow if this gets integrated