MD5Hash field that is in the list of data fields available to be included in the load files created during a Legal Production never contains data.
An MD5Hash field does not exist in the Matter and/or is not extracted/created by the Field Appender.
If it doesn't already exist, add the following field to the Legal Review template being used:
Open the 'ZyLAB.EDiscovery.Processors.FieldAppender.dll.xml' configuration file located in the '\Program Files (x86)\ZyLAB\EDiscovery\Ediscoveryservice\Assemblies\Performers' folder and change all instances (usually 3) of:
<BinaryHashProperty PropertyName="MD5" HashType="MD5" />
<BinaryHashProperty PropertyName="MD5Hash" HashType="MD5" />
This will create the MD5Hash field which will be populated by the Field Appender when a new Matter is created using a Legal Review template that the field has been added to.
3.9, 3.10, 3.11