In a direct communication, the source explained:

The RPI has been turned into the CoreLogic Case Shiller HPI. https://www.corelogic.com/products/corelogic-case-shiller.aspx

In response, we have:

1. Archived the series by marking them as "discontinued" in their metadata and the catalog.

The discontinued series reside in the historical catalog. They run from 2000 to 2016.

• United States » Real Estate » Residential » Home Prices » Existing » FNC Residential House Price Index

The substitute series reside in the add-on catalog. They start at 1970.

• CoreLogic Case-Shiller Home Price Indexes » Monthly

References

• CoreLogic snaps up FNC for $475 million (HousingWire, Dec 2015)
• CoreLogic to acquire FNC, Inc. (Dec 2015)
• CoreLogic reports first quarter 2016 financial results (Apr 2016)