As I said before, the Constitution REPLACED the Articles of Confederation, it did not augment it.
Since I never claimed jthe Constitution "augmented" the Articles you should take that up with another. The Constitution INCORPORATED some of the articles and grew out of them. Part of what was incorporated was the view that our Union was perpetual and the realization that "united we stand divided we fall" EVERY Founder believed that. NONE believed in a right to secession and you cannot find a word from any indicating that they did.
Our constitution is a FOUNDATION from which bricks cannot be removed willy-nilly or the whole edifice falls.