OLD RELATED ONE (field)
OLD RELATED ONE operates the same way as RELATE ONE does, except that OLD RELATED ONE uses the old value of field to establish the relation.
Note: OLD RELATED ONE uses the old value of the Many field as returned by the Old function. For more information, see the description of the Old command.
OLD RELATED ONE loads the record previously related to the current record. The fields in that record can then be accessed. If you want to modify this old related record and save it, you must call SAVE RELATED ONE. Note that there is no old related record for a newly created record.
Old, OLD RELATED MANY, RELATE ONE, SAVE RELATED ONE.