Hi Joe Buckle,
Currently, importing and exporting from/to Word 2007 is done through the DocxFormatProvider and unfortunately it doesn't support content controls. We are considering this functionality, however I can't give you any specific details about availability date. One option is to implement your own format provider which supports content controls, but I'd say this is far from trivial.
Get back to us if you have any further questions.
the Telerik team
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