By default, Federated catalogs are not included in Display Templates. If you add Federated data to your Index, the results will not appear until you edit the Display Template to enable their display. Follow the steps below to show Federated data in your Search results.
Before you begin, select a Display Template to modify, so that Saved Searches based on this template will show Federated data.
Click the Advanced tab
Check the boxes for Show Federated Catalogs and Query All Catalogs by Default
Click Save
Click Save