The "Terminate all but Console" is a special option that allows you to manage reports and results without having to pay for the servers' time other than on the Console.
By using this option you will terminate all of the load servers, but keep the GUI console open. In this case all load servers are terminated, but the load results, logs and graphs are still available for viewing and downloading from the CloudIntelligence website.
You are only billed according to consumed computing hours. Once you terminate all load servers but the Console's, you are billed only for the Console time.
To terminate only the load servers, click on Terminate All But Console button on the right-hand menu:
Once you finish the test you can download JTL files, graphs and CSV files to your local machine to prepare your report. Use the Files tab to download any files generated by JMeter and saved during the run. Use the JTLs tab to download any JTL or graphs you wish to use in your report.
Do not forget to use the Terminate Test button in order to terminate the remaining server.