Keeping separate staging sandbox and production account

What is the recommended way to be able to rapidly develop and iterate on a series of forms we're using for application integration, then be able to deploy them to a production instance? I tried the tool recommended by OneSpan's phone support at https://developer.esignlive.com/code-share/esignlive-copy-tool/ however using it causes it to crash with a NullReferenceException. Manually recreating the forms every time is not a workable option due to the number of forms and the fact that we're using labels as anchors to deploy dynamic content before emailing the forms to clients.