The new Constitution was to make the Perpetual Union more perfect, as anyone at the time or anyone who can read English would understand.
Then it's very odd that the new constitution they adopted says nothing, not one word, about the Union being perpetual, permanent, etc. The Articles of Confederation did so several times, but not the federal constitution. There is also no prohibition in the Constitution against a state revoking its ratification. Nothing in the document says that ratification is irrevocable. Indeed, if the framers had inserted such language, several states probably would not have ratified it.