Nintex Form List Form Webpart allow Webpart Connections
Allows the Nintex Form List Form Webpart to allow Webpart connections. The primary need is to allow a querystring filter webpart to provide the parameter value for the ID of the item to display in the Form webpart when in edit mode. Other possible parameters could be list name and site name.

Thanks for your suggestion Andrew. As we are currently working on Universal Forms and rebuilding all our controls for the new technology platform, we will be considering this feedback for the new control.
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Pramod commented
I think this is kind of available in the Nintex Forms 2013
Refer to thread https://community.nintex.com/message/44392#comment-44392
The screen shot shown in the solution looks like Nintex Forms 2010.
I am using nintex forms 2013 and the two webparts are not exchanging data properly
Another person is having the same issue: https://community.nintex.com/thread/11592 -
Anonymous commented
I agree, this would be a good feature