Unable to demonstrate common fields on the same column using Kibana 3?

Hello,

I am using two different indexes which are named cdr_mobile and cdr_volte that have lots of common fields. So in order to show datas on Kibana I have made an alias using two of them cdr_alias and now I am using cdr_alias in order to retieve data to Kibana.

The problem I have is, I cannot demonstrate common fields on the same column. Instead of that I am having for example, cdr_volte.startOfCharge and startOfCharge (the other thing I dont understand is here, it is using the cdr_mobile as default).

Do you have any idea how I can put the common fields on the same column ?

Thank you