Everytime a new update is available for our players, a building that is occupying an area that now has a new unmovable object in the resort, can be sent to your inventory (Construction Hat icon). In that case all you need to do is click on your inventory and search for your missing building in its specific tab. Once you localize it, you should be able to place it without issues and the building should be available instantly in the same state as before.
Once you place a building and you notice that it isn't as it was before the update because it's broken(asking items to repair again), missing items on the shelves, activities running missing or slots locked again, you should reach us using our support option available in the Settings Menu and Loading Screen, describing your problem so we can investigate and solve your issue.