Can I download only the comments made to my survey when tested?
If you run a csv/excel export from Results>Exports, with a combination of setting up filter and selecting the questions to export, you can get an export that only includes the comments.
First create the export and from the general tab only check the fields you want included (uncheck everything else).
Next navigate to the filter tab. You are going to want to setup a condition so you only get respondents in the export that left comments.
Select the condition/question and use the is answered selector in the logic.
Finally save the export and download it. This will get you your comments.
Here are some links to documentation explaining these steps further:
Hope this helps!