What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Are you referring when downloading your submissions data?
You only need to download some fields, not all of them, is it correct?
If this is correct then you can download only the fields that you need, please take a look on this guide, you will find the steps to create an Excel report and you will be able to include only the fields that you want: http://www.jotform.com/help/101-How-to-create-an-Excel-Report.
This link will provide more information about the reports that you can create in JotForm: http://www.jotform.com/help/326-How-To-Create-Form-Reports-in-JotForm.
If it is not what you are looking for, please provide us a bit more, we will be glad to help you.