No results obtained using query with Bool must and filter

[Ugen]

Field Description is a Text field, Field Year is a long field.
Query 1 result is wrong it returns nothing ("total": {"value": 0,"relation": "eq"})
Since there are documents with the word "Amour" in the Description field on year 2001 !
Query 2 result is OK ("total": {"value": 71,"relation": "eq"})
Query 3 result is OK ("total": {"value": 12,"relation": "eq"})

What am I doing wrong?

Query 1

GET index/_search
"query": {
     "bool": {
     	"must":[
     		{"match": {"Description":"Amour"} }
     	],
     	"filter":[
     		{"match": {"Year":"2001"}}
     	]
     }
   }

Query 2

 GET index/_search
 "query": {
     "bool": {
     	"must":[
     		{"match": {"Description":"Amour"} }
     	]
     }
   }

Query 3

GET index/_search
"query": {
     "bool": {
     	"filter":[
     		{"match": {"Year":"2001"}}
     	]
     }
   }

[dadoonet (David Pilato)]

Welcome!

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