Hen G

Something to add onto that is the time and weather does match when uploaded into the new upload. I downloaded the world file during a thunderstorm night-time in game and it was the same time and weather after uploading it into realms.

Just wanted to chip in and say I have the same problem. I tried uploading an existing world into a realms save file with matching installations specifically on snapshot 9. Despite having the level data and the player data files in the directory, none of the data transfers over and ended up being a completely new world with the same seed.