In 1.17, I started a bedrock survival world, that is hosted on an external commercial server. The world has been upgraded as new versions come out and is now running 1.19.51. After travelling to new chunks, several thousand blocks out, structures are not where they should be. Chunkbase gives the structure coordinates, which I confirmed using a completely new world in Creative mode, but they are not there in my upgraded survival world from 1.17.