Audience Builder displays "Audience contains attributes with data more than 36 hours old" warning when creating Audience

This warning indicates that data loaders have been deactivated as a part of the Daily Automation Performance Enhancement feature. Audience Builder will restrict data loaders associated with dimensions that are not being used to improve daily automation performance. The data loader will be reactivated when an associated dimension is used individually in a filter or exclusion and the Audience is saved OR published. After the next iteration of the daily automation is complete the data from reactivated data loaders will be refreshed.

The system evaluates dimensions and attributes every day looking for any that haven't been used in 180 days from the last time they were saved or published.

NOTE: This process does not reactivate data loaders that have been manually deactivated from a Data Factory Utility Activity.