I have returned to the survey several times as new questions have been added. A quick check showed my previous answers were still there. I think if you fill in the personal information at the end of the survey, you can return to your form as often as needed.
Since I am one of the old timers in this forum I enjoy reading the results of the survey and seeing how there are so many different reasons to flush and different reactions and results. I began flushing because of painful gallbladder attacks, I never dreamed of doing it for clear skin, allergies, and the multitude of other reasons people flush, I just wanted to avoid surgery. For me, Liver Flushing is a precious gift no matter how vile the Epsom Salt tastes.