In 7.3.1 the solution to indexing EAs that are replicants is to define an instance nums using a /*/TeamSite/Metadata/location/*/system_idHowever the issue I am facing is that though EA's with replicants can be index in the same zone the advanced search screen does not honor the /*/ syntax when defining a custom EA attribute to search for and the only way it will return results is to define each one which is results in separate fields in the UI which is essentially unusable for users.