Succeeded in updating the description as well. As a final step have gathered all the code into cut-and-paste sections with three utility methods for deleting a property, updating the name and updating the description. From the (attached!) example:
All the relevant code is boiler plate sections that can just be copied into a strategy. Commented to explain what everything does.
Caveat emptor: code tested, but I am not C# expert galore, it could be that I overlooked something somewhere.
But for now it works beautifully.
In the attached strategy is the complete example, with all of the code ready for cut and paste.
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