[Alfresco 5.2] weird search result

[JC83]

Hi,

I'm using the search API and technically it works : I mean I'm able to have a result .. but the result is pretty weird 

My query is something like 

$ curl -X POST \
"http://localhost:8080/alfresco/api/-default-/public/search/versions/1/search" \
-H  "accept: application/json" -H  "authorization: Basic YWRtaW46YWRtaW4=" \
-H  "Content-Type: application/json" \
-d "{  \"query\": {    \"query\": \"irfm:docId:*\"  }}"

I put in in a simple script that take the research pattern in argument

./search.sh irfm:docId:I0001??????
term = irfm:docId:I0001?????? result = 1552

./search.sh irfm:docId:I0002??????
term = irfm:docId:I0002?????? result = 1000

(in that case it's really astonishing to have such a round result .. )

./search.sh irfm:docId:I0003??????
term = irfm:docId:I0003?????? result = 960

./search.sh irfm:docId:I0004??????
term = irfm:docId:I0004?????? result = 0

Ok this could be fine but when I verify and try to look at every nodes the result is NOT the sum of all subresults 

./search.sh irfm:docId:I000???????
term = irfm:docId:I000??????? result = 1040

It's the same result with the star wildcard .. 

./search.sh irfm:docId:I000*
term = irfm:docId:I000* result = 1040

..

What am I doing wrong ?

Thanks in advance