ES 6.3 doesnot pickup date type feilds

I was trying to copy my data from dev to test environments.

dev = 6.2X
test = 6.3x

"time": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256

"time": {
"type": "date"

the default mapping for date field is not being picked up automatically (for timestamps type data)
further unable to create index patterns in kibana as it cannot see any timestamp field.
please comment.

How did you copy?

hi david,

I have used the helpers from Python API
precisely the following

helpers.reindex(client=es1,target_client=es2, source_index='user_data',target_index='user_data')

So you did not create the mapping in the 6.3 cluster before copying?
Then that is expected.

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