Blueprints are referenced by their ERCs under-the-hood in the Blueprints Options widget and the Low-Level Search Options widget also supports a new attribute called search.experiences.blueprint.external.reference.code
as the recommended way to configure a blueprint (preferred over the old attribute search.experiences.blueprint.id). In addition to that, when moving blueprints or elements between different environments using for example the Batch Client Extensions, entries will preserve their ERCs making portability easier. This way, when for example a search page is imported from a LAR, the Blueprints Options and Low-Level Search Options widget configurations can continue working thanks to the association being achieved via the ERC of the blueprint and not via its ID or other identifier that may be different on the new environment.
Lastly, users can now access and edit the ERC of blueprints and elements directly from the editors.