Work Around to index Array of Integer in normal integer field
===

I came to know that it is possible to index an array of integer in an existing integer field. 

But want to confirm if this will not affect my existing huge index, which have the particular field as integer(not an array).

I am using the following type of Mapping Syntax for arrays. 

            "idarray":
            {
            "properties":{
                "id":{"type" : "integer", "store" : "yes","precision_step" : "0"}
                }
            }

but for single Integer, it is something like below.

           "id" : { "type" : "integer", "store" : "yes", "precision_step" : "0" }

Won't it affect the older index(existing index), if I try to Index an array of integers using the JSON format mentioned with field "idarray"?

Or is there something I understood wrong here?

I just wanted to confirm before making changes to my production.

Thanks,

Manoj