# Elasticsearch Transorming data from 1.x to 5.x - reindex remote - unable to migrate \_timestamp
**URL:** https://discuss.elastic.co/t/elasticsearch-transorming-data-from-1-x-to-5-x-reindex-remote-unable-to-migrate--timestamp/88119
**Category:** Elasticsearch
**Created:** [June 2, 2017, 5:07pm UTC](https://discuss.elastic.co/t/elasticsearch-transorming-data-from-1-x-to-5-x-reindex-remote-unable-to-migrate--timestamp/88119 "2017-06-02T17:07:09Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@elastic\_boston](https://discuss.elastic.co/u/elastic_boston)
#### Post date: [June 2, 2017, 5:07pm UTC](https://discuss.elastic.co/t/elasticsearch-transorming-data-from-1-x-to-5-x-reindex-remote-unable-to-migrate--timestamp/88119/1 "2017-06-02T17:07:09Z")
There has been another post about this, but there was no response.
I have an old index in ES 1.x, that I want to migrate to 5.x. The source documents have the \_timestamp field enabled. I am using the remote-reindex api and need to migrate the \_timestamp field. Have not been able to do this. I have tried using ingest pipelines as in the following
PUT \_ingest/pipeline/p1
{
"processors": [
{
"set" : {
"field" : "new\_timestamp",
"value" : "{{\_source\_ingest.timestamp}}"
}
}
]
}
Then I run the reindex as
POST \_reindex
{
"size": 1,
"source": {
"remote": {
"host": "[http://xxx:9200](http://xxx:9200)"
```
},
"index": "twitter2"
```
},
"dest": {
"index": "twitter2",
"pipeline": "p1"
}
}
I have also tried to use inline scripts as
POST \_reindex
{
"source": {
"remote": {
"host": "[http://xxx:9200](http://xxx:9200)"
```
},
"index": "twitter2"
```
},
"dest": {
"index": "twitter2"
},
"script": {
"lang": "painless",
"inline": "ctx.\_source.new\_timestamp=ctx.\_source.timestamp"
}
}
But both these presented null fields in the results. Has anyone been able to solve this please?
---
### Author:  [@elastic\_boston](https://discuss.elastic.co/u/elastic_boston)
#### Post date: [June 5, 2017, 3:13pm UTC](https://discuss.elastic.co/t/elasticsearch-transorming-data-from-1-x-to-5-x-reindex-remote-unable-to-migrate--timestamp/88119/2 "2017-06-05T15:13:30Z")
No one has any input on this??
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 3, 2017, 3:13pm UTC](https://discuss.elastic.co/t/elasticsearch-transorming-data-from-1-x-to-5-x-reindex-remote-unable-to-migrate--timestamp/88119/3 "2017-07-03T15:13:58Z")
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