The data seems to be stored in the binary file
/Database/var/openldap-data/__db.00X
where X is a number 1,2,3… depending on which profile is active. Since it is a binary I cannot spot exactly the place where the Kerberos 5 is configured.
So I will suggest a workaround…
If you have another profile copy the file from another profile into this one, if all goes well you will only lose some users. If you don’t have another profile create one or copy it from another ZS.