Getting ready to deploy a new website in SiteFinity (.NET) and have been unsuccessful in getting our forms to work properly.

They function in that you can populate with data and it will successful submit and arrive at the return URL. But it appears that no data is flowing into my Campaigns or even into Leads period. 

My web to lead code is clean and functions exactly how it should when testing it externally (debug mode). Our code is pasted into an iFrame within each of our three forms. I have not removed the debug code from any of the web 2 lead code. I've never had an issue with it in the past. 

Question: Where/How do I begin to trouble shoot this? Is there additional or esoteric code I need for Sitefinity? I saw a post about adding some .asp code...

Thanks for your help!