MATCH (masterNode:LabelParticipant {uuid: "ebdbd7ca-6f3f-4316-89f9-07f06b92b7f7"}) MATCH (childNode:LabelParticipant {uuid: "ef90d49f-583c-42eb-b2c2-4b945163d387"}) WITH masterNode, childNode CALL apoc.refactor.mergeNodes([masterNode, childNode], { properties: "discard", mergeRels: true } ) YIELD node RETURN 0