Rest assured Windlord, I do not anticipate deleting anyone's messages as I would find this is a very disrespectful thing to do. :)
As far as your question, if you click on the Forum link at the navigator bar at the top, you will get to a page at which all discussions are listed in all categories as default. If you choose to display categories, then you will see that there is no duplication, just a design feature.
Good question. Perhaps we could put this to the participators for consideration.
My own thoughts on this are like this:
I feel that it is good to focus our energies for the moment of the Summit. So I think that it is good to have a time frame.
So I suggest that once we close the Summit, let's close the Summit category on this network, to be open for reading only. If readers want to discuss the topics further or start new topics, they can do so in other categories of the Fruit Lovers forum. I am happy to keep the general forum running.