You will not see that option only for the searches with stats/table as there is no data present in event form. Since you've ran a stats/table command, what do you expect to see in the Raw Events export?
That's what I thought was happening. I'd like to see what you see when you click on the events tab, the raw logs or a csv with each field in it. If Splunk can show you the related events why can't you export what you see?