post https://example.com/v1/copyForm
This method creates a copy of the form provided in your account.
Create a copy of the specified form
POST /api/v1/copyForm HTTP/1.1
Host: www.formstack.com
api_key=[[app:api_key]]&form=12345
curl -X POST -i -d "api_key=[[app:api_key]]&form=12345" https://www.formstack.com/api/v1/copyForm