Hi all,
Assume you have following situation:
merge (c:Container {name:"Container"})-[:CONTAINS]->(i11:Item {name:"11"})<-[:BELONGS_TO]-(ba:Bag {name: "A"})
with c, ba
merge (c)-[:CONTAINS]->(i12:Item {name:"12"})<-[:BELONGS_TO]-(ba)
with c, ba
merge ...