I'm not sure there's an answer to this -- but I'm interested to follow this thread to see if someone comes up with a solution. Something you could do, but I'm not sure how scalable or long-term manageable it is, would be to micro-define your content categories. For instance, let's say you are promoting Content A -- Email 1 doesn't reference Content A, so you can leave your Categories as ALL. Email 2 references Content A. In ContentAI you mark Content A as "Category 1" and all of the other content "Category 2". Then in your email when you insert ContentAI you select a category of "Category 2" As I mentioned, this won't solve your problem long term, but if you need to get an email out that will occasionally by included in ContentAI, then this would be a feasible hack.
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