Why did my Onboarded trait populations drop to 0 around October 15th?

Why did my Onboarded trait populations drop to 0 around October 15th?

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Audience Manager User Guide
Applies to: Audience Manager

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Question

Around October 14th, 2019 I noticed that my onboarded trait populations for the Device ID graph have dropped to 0, where previously they were much higher.

Trait graph shows a drop of the Total Population to 0

Answer

On October 15th, an update to Audience Manager's Profile Merge Rule functionality was changed to where Onboarded data keyed off of a CRM ID uploaded to a Cross Device Data Source are no longer being realized against device ids.  Previously Audience Manager was realizing against both the Cross Device ID (or CRM ID) as well as copying those realizations to associated Audience Manager UUIDs (Device IDs).  The change was made to more accurately refect the nature of the trait data and the profiles being realized.

To view the trait realizations, please select "Cross-Device ID" option from the drop down in the top right hand corner of the Trait view.

Image showing Trait Population for Cross Device ID

Resources

For more information about the changes that were implemented on the 14th of October, please review the videos and tutorials in the Audience Manager Product Documentation.