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It is possible to prepopulate second form fields, with the value of first form. You can take advantage of our "URL Parameter" and "Custom URL (Thank you)" feature to prepopulate your form fields of second form with the value of first form.
Here are the steps you should follow to achieve this:
1. Get the field names of both of your forms i.e. the fields of master form which you want to read and the fields of your second form which you want to prepopulate. The following guide should help you, to get your field names: http://www.jotform.com/help/146-How-to-find-Field-IDs-Names
2. Build a prepopulation URL of your second form by taking of our "URL Parameter" feature. The following guide should help you: http://www.jotform.com/help/71-Prepopulating-fields-to-your-JotForm-via-URL-parameters
3. Add this prepopulation URL in the "Custom URL" (Thank you) of your first form. Please check the screenshot below:
Once all the above steps will be complete, and you submit your first form, you will be redirected to your second form where the form fields will already be populated.
You can, also check the below guide, which explains the same thing in more detail:
If you have any query, or need further assistance, feel free to revert back.