I'm sure this wouldn't work, but would it be possible to move the LFS folder to my C: drive from my D: drive by simply moving the LFS folder to somewhere on the C: drive? Dumb question, I know, but I'm a bit curious.
Yes, it should work without a problem. If you have any file associations assigned for opening setups/layouts/replays etc., you can run this tool after moving the folder: https://www.lfs.net/file_lfs.php?name=LFS_Associations.zip