Elasticsearch index documents don't show

Hi community,

I have a very strange issue. I use an Elasticsearch index to track some jobs. When the jobs finish, I remove the documents entries.
I created a source to track these changes in Grafana, but if I don’t have entries for a day and then I pull the index with the documents, these data aren’t show in Grafana.

Did you know why this happen?

My Grafana version is: Grafana v5.2.2 (aeaf7b2)