Simple Export
C:>ldifde -f export.ldif -s SERVERNAME -r "(cn=Joe User)"
By default, the exported user will be exported with
ChangeType: Add, which means the record can be directly imported somewhere else.
Simple Import
C:>ldifde -i -f import.ldf -s SERVERNAME
Simple Domain Export
(It will export only domain related data NOT the Forest-Specific.)