Content Item Data Load Error

Summary:

The Performance Management provides a HDL file with the support to ContentItem business object. The HDL to load Content Item has From and To date. However, the system throws an error when I try to upload content item with same DataSourceID and different from date which says "You can't supply multiple data lines for the same record in the same file because the component ContentItem isn't date-effective.". No error if I only load 1 record. But, there is an error when I load multiple records.

Below is the HDL template,

METADATA|ContentItem|ContextName|ContentItemValueSetName|Name|ContentItemId|ContentItemCode|DateFrom|DateTo|ItemDescription|RatingModelId|RatingModelCode|CountryGeographyCode|CountryCountryCode|SourceSystemId|SourceSystemOwner