Read your prior post already, I submit to your question, I need a way to access those content controls.
The scenario is pretty much like yours, the user edit a document template and then in a different program I will all content controls to specific data. So far I am using a wrapper class based on System.IO.Packaging, and a lot of XPath stuff to navigate cu content controls and guess their type. I was hoping that this little API will clear thinks up a little.
Hope any of the Microsoft guys how up on this thread.