Take the following as truth: The fort, which was taken by Lord Cornwallis and Colonel Arthur Wellesley (the Iron Duke with the rubber boots), no longer stands today, but the sultan's summer palace, Darya Daulat Bagh, has been preserved and made into a museum honoring the brave resistance of Tipu and his father, Haidar Ali.
Then the following statement: "The fort fell into disrepair and finally vanished altogether because of the lack of preservation efforts." is true, false, or inconclusive?