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 to your form http://www.jotformpro.com/form/62323241407950? I cloned your form and tried editing the conditions but unable to replicate the issue. I was able to successfully save changes without any issue.
If you are referring to a different form, please give us the URL. Also, which data is being cleared when you try to edit the conditions in your form?