Fail to import previously saved world on Windows 10 Edition (.MCWORLD)

I saved two worlds from 1.20.1 as .MCWORLD files (one was a creative world I made, one was a survival world I made), uninstalled and reinstalled the Minecraft Launcher (because of an unrelated bug), and of course my worlds were gone, but I knew this would happen which is why I saved my two worlds. The problem is, when I try to import them into Minecraft 1.20.10, it doesn't work and gives me the "Failed to import" message. I've looked up online for a way to fix it, but I couldn't find anything. These worlds were really important to me and I was looking forward to playing them in 1.20.10, but sadly, I can't.