Technician has gone missing, and cannot be re-added.
I tried to remove a technician and convert them back into a requester.
They no longer appear in Technicians, but they also do not appear in requesters even after re-importing Active Directory.
I cannot re-add them manually as a technician as it tells me the login name already exists.
The technician can still log in as a technician, but all their access/admin rights have gone.
I've got a case open - 8013167 - but had no reply yet.