My world got corrupted when my computer suddenly crashed while I was playing Minecraft Bedrock Edition on Windows 10, and I was able to restore it by using the level.dat file from another world using the Same Exact Seed. However, I noticed that the old Wandering Traders wouldn't de-spawn, and no more new Wandering Traders would spawn. Achievements are still enabled, and I've earned a few achievements on that world, so the game recognizes that I haven't "Cheated". I have also tested a few new worlds, and Wandering Traders still spawn in those worlds, so I think a certain file/folder related to Wandering Traders in my main Minecraft world might still be corrupted, glitched, or even missing.