Cypher query produces incomplete results (neo4j-1.9-SNAPSHOT)

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Cypher query produces incomplete results (neo4j-1.9-SNAPSHOT) Natalia 15.03.13 0:14
Hi everyone,

I have run into the problem when executing a cypher query against a database "neo4j-1.9-SNAPSHOT" on Windows 7.
The database is attached: it has just 81 nodes and 93 relationships.

When I run the fist 2 queries, I do not get node with id ="45" as the first node in the path in the result list.
1) start a = node:my_nodes(label='2826'), b = node:my_nodes(label='2826')
    match a-[r1]-b
    with a, b, r1
    match b-[r2]-c
    where c.label = 2826 and r1.label = r2.label and id(r1) <> id(r2)
    return id(a), id(b), id(c), id(r1), id(r2);

2) START n0=node:my_nodes(label='2826'), n1=node:my_nodes(label='2826'),
       n2 =node:my_nodes(label='2826')
    MATCH n0-[r0]-n1-[r1]-n2
    where r0.label = r1.label and id(r0)<>id(r1) 
    RETURN id(n0), id(n1), id(n2), id(r0), id(r1);


However, when I run the 3rd query, node with id="45" is definitely in the result list. Moreover, when checking the database it seems to be the case.
3) start a = node(45), b = node:my_nodes(label='2826')
    match a-[r1]-b
    with a, b, r1
    match b-[r2]-c
    where a.label = 2826 and c.label = 2826 and r1.label = r2.label and id(r1) <> id(r2)
    return id(a), a.label, id(b), id(c), id(r1), id(r2);

On running the cypher query:
"""start a = node:my_nodes(label='2826')
    return id(a);""""
node with id="45" is in the index.

Any ideas what can be wrong with the first 2 queries?

Thanks & Cheers,
Natalia