The following common configuration attributes are not migrated automatically.
This is not an exhaustive list. You might have used additional configuration attributes that must be migrated manually.
ds-hdsml-dsmlschemalocation ds-hdsml-soapschemalocation dsKeyedPassword dsMappedDN dsMatching-pattern dsMatching-regexp dsSaslPluginsEnable dsSaslPluginsEnable dsSaslPluginsPath dsSearchBaseDN dsSearchFilter nsabandonedsearchcheckinterval nsbindconnectionslimit nsbindretrylimit nsbindtimeout nschecklocalaci nsconcurrentbindlimit nsconcurrentoperationslimit nsconnectionlife nshoplimit nsMatchingRule nsmaxresponsedelay nsmaxtestresponsedelay nsoperationconnectionslimit nspossiblechainingcomponents nspossiblechainingcomponents nspossiblechainingcomponents nspossiblechainingcomponents nspossiblechainingcomponents nspossiblechainingcomponents nsproxiedauthorization nsreferralonscopedsearch nsslapd-db-durable-transaction nsslapd-db-home-directory nsslapd-db-replication-batch-val nsslapd-db-transaction-logging nsslapd-directory nsslapd-disk-full-threshold nsslapd-disk-low-threshold nsslapd-exclude-from-export nsslapd-localhost nsslapd-localuser nsslapd-mode nsslapd-port nsslapd-rewrite-rfc1274 nsslapd-secureport nsslapd-security nsSSL2 nsSSL3 nsSSLActivation nsSSLServerAuth nsSSLSessionTimeout nsState nstransmittedcontrols plugin-order-preoperation-finish-entry-encode-result