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.
I'm sorry but can you provide more details about this inquiry. When you say re-use old orders does that mean that you want to have an option wherein the user can just click a link and then it will redirect to a form that has a pre-populated or pre-filled data?
If your answer is yes, then you could probably check this app: http://apps.jotform.com/app/field_prepopulator. It allows you to fill the fields you would like your users to see pre-filled and produces the generated URL to send to your client.
If not, then please let us know so that we can further assist you. Thanks!