# Migrating from Elastic Search 5.x to 6.x broke this query and I would like to understand why
**URL:** https://discuss.elastic.co/t/migrating-from-elastic-search-5-x-to-6-x-broke-this-query-and-i-would-like-to-understand-why/177168
**Category:** Elasticsearch
**Created:** [April 16, 2019, 11:27pm UTC](https://discuss.elastic.co/t/migrating-from-elastic-search-5-x-to-6-x-broke-this-query-and-i-would-like-to-understand-why/177168 "2019-04-16T23:27:39Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@dcemgs](https://discuss.elastic.co/u/dcemgs)
#### Post date: [April 16, 2019, 11:27pm UTC](https://discuss.elastic.co/t/migrating-from-elastic-search-5-x-to-6-x-broke-this-query-and-i-would-like-to-understand-why/177168/1 "2019-04-16T23:27:39Z")
Hello,
Assume an index with a "person" type with firstName, lastName and homePhone, workPhone, address, etc. fields.
We have this query running on Elastic Search 5.x
```json
{
"query": {
"bool": {
"must": [
{ "query_string": { "query": "aFirstName aLastName 5556668888", "all_fields": "true", "default_operator": "and" }}
],
"filter": [
{
"term": {
"aCertainField": {
"value": 2
}
}
}
]
}
}
}
```
As I understand, this used to search each term across all fields and return whatever was the best match.
Running the same query in 6.x doesn't return anything. I feel it has something to do with the `_all`field disappearing but I can't put my finger on how to implement the same functionality.
The use case is a search box to search a wide array of different types and we want each term to be looked up against each field. I looked up multi term/multi field queries but it looks like I have to know in advance what each term is (first term is a firstname, second term is a last name, third term is a phone number, etc.) and I don't have such knowledge in advance.
Any help would be greatly appreciated, thanks!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 14, 2019, 11:27pm UTC](https://discuss.elastic.co/t/migrating-from-elastic-search-5-x-to-6-x-broke-this-query-and-i-would-like-to-understand-why/177168/2 "2019-05-14T23:27:52Z")
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