As per this Salesforce article:
- history tracking on ContentVersion description field records NewValue only
- field history for the Content is only available by querying the object ContentVersionHistory using Data Loader or another API tool.
But when using this SOQL:
SELECT OldValue, NewValue, Field from ContentVersionHistory where Field != 'contentVersionDownloaded' order by field asc, CreatedDate desc
the export shows that NewValue is empty all the time when description field value has changed and it looks like NewValue and OldValue are always empty for other changes.
Has anyone encountered such issue ?
Note: created a case with salesforce support, waiting for reply