This is a restore from LDAP data created in Script: Bash: TDS LDAP Backup.

scp backup.ldif.gz sjoerd@opends.company.local:/tmp

gunzip backup.ldif.gz

Rename the unzipped file to import.ldif

mv backup.ldif import.ldif

/opt/OpenDS-2.2.0/bin/import-ldif \
  --ldifFile /tmp/import.ldif \
  --backendID userRoot \
  --replaceExisting \
  --rejectFile /tmp/import-rejected.log \
  --clearBackend \
  --bindDN cn=manager \
  --bindPassword <secret>

In logfile /var/log/opends/errors you can follow the progress of the import.