It seems like the code in your post (at 12:13) overcomes the error I was encountering before, but it also maps all content controls to the same XML object/address/Id (I'm not sure what you call it). So the content of any existing CCs in the document is changed to the query string.

The big question is how do you exclude the existing CCs from the mapping operation so that you can have different sets of CCs for different reoccurring words or phrases?

I'm sorry that I don't yet understand the details of your code, I'm not to good at VBA and even worse when I step outside of Excel