$OpenLDAP: slapd 2.5.11

Hi, i've a weird case where olcLastBind defaults to TRUE.
When using convert (slaptest) method.
and explicit lastbind to off/false has no effect.

#Initialize slapd with convert method
slaptest -f /etc/openldap/slapd.conf.init -F /etc/openldap/slapd.d/
slapcat -n0 | grep LastBind

olcAttributeTypes: ( OLcfgDbAt:0.22 NAME 'olcLastBind' EQUALITY booleanMatch S
  olcLastMod $ olcLastBind $ olcLimits $ olcMaxDerefDepth $ olcPlugin $ olcRea
olcLastBind: TRUE
olcLastBind: TRUE
olcLastBind: TRUE
olcLastBind: TRUE

Tested with minimal config:
# stand-alone slapd config
include /etc/openldap/schema/core.schema
include /etc/openldap/schema/cosine.schema
include /etc/openldap/schema/inetorgperson.schema
include /etc/openldap/schema/openldap.schema
include /etc/openldap/schema/nis.schema
#include /etc/openldap/schema/test.schema

# allow big PDUs from anonymous (for testing purposes)
sockbuf_max_incoming 4194303

moduleload back_ldap

#######################################################################
# database definitions
#######################################################################
database config

database mdb
suffix "dc=example,dc=com"
rootdn "cn=Manager,dc=example,dc=com"
rootpw secret
directory /var/lib/ldap
lastbind off

database monitor

Best regards,