Close. Port Orleans was the resort that shut down completely.
The history... In July 2000, it was announced (and Another Voice is dead on with the reason) that Dixie Landings and Port Orleans would merge into a single resort. As we all now know, the "Port Orleans" name was retained and the "Riverside" and "French Quarter" monickers were established to identify the two sides.
The merger occured in April 2001. Bonfamilles (the table service restaurant at Port Orleans) shut down, and boat rentals were no longer offered at the former Dixie Landings. "The Colonel's Cotton Mill" was renamed "The Riverside Mill" to further reduce the unsavory naming of the place. Other than that, things remained pretty much the same. They are really two distinct resorts with seperate check-in, etc. They seem to run just like they used to.
In November 2001, in the wake of 9/11, the French Quarter shut down completely until Memorial Day weekend 2002. There was some speculation that a complete rehab was going on, but that proved not to be the case when it reopened.
Then, in March 2003, French Quarter shut down again - this time for an actual full rehab. New furniture, new bathroom fixtures, carpet, wall paper, curtains, etc. appeared when the resort reopened in March 2004.