Update node key index in batch operation - neo4j

Question

Short
I can't get neo to update existing node properties in a batched rest op.
Long
I want to create a batch operation that inserts/updates a node inside an index. It should handle three use-cases:
if the node does not exist, insert it with the given properties set
if the node exists, update it's properties set with the new values, if any.
I'm using the batch operation api, I wrote a test where I'm issuing two requests:
Short
1. first one inserts the node and indexes it's properties
2. second one simply updates some properties of the node
Here's the first request:
[
{
"method": "POST",
"to": "/index/node/events?uniqueness=get_or_create",
"id": 1,
"body": {
"key": "id",
"value": "222222222",
"properties": {
"id": "222222222",
"type": "event-type"
}
}
},
{
"method": "POST",
"to": "/index/node/events",
"body": {
"uri": "{1}",
"key": "id",
"value": "222222222"
}
},
{
"method": "POST",
"to": "/index/node/events",
"body": {
"uri": "{1}",
"key": "type",
"value": "event-type"
}
} ]
And now the second one.
[
{
method: 'POST',
to: '/index/node/events?uniqueness=get_or_create',
id: 1,
body: {
key: 'id',
value: '222222222',
properties: {id: '222222222', type: 'event-type', title: 'SUPEREVENT'}
}
},
{
method: 'POST',
to: '/index/node/events',
body: {
uri: '{1}',
key: 'id',
value: '222222222'
}
},
{
method: 'POST',
to: '/index/node/events',
body: {
uri: '{1}',
key: 'type',
value: 'event-type'
}
},
{
method: 'POST',
to: '/index/node/events',
body: {
uri: '{
1
}',
key: 'title',
value: 'SUPEREVENT'
}
}
]
NOTE! that on the second request i'm adding and event title property with value SUPEREVENT. This does not get persisted nor indexed. Why? and how can I fix it?
Thank you,
Alex

Answer 1

From the doc:
URL Parameter uniqueness=get_or_create: Create a new node/relationship
and index it if no existing one can be found. If an existing
node/relationship is found, discard the sent data and return the
existing node/relationship.
So your second request's data will be discarded. You need to split each of your requests in two requests each, and do two batches. Each of the two batches has two instructions: first one creates the node if not present, and the second one updates the properties.