Folders UFO/MAPS and standar/xcom1/MAPS

[Flaubert]

Hi,
  tinkering with MAP files I noted that they are both in those two directories (they are the same files, at least in names). And I would like to know why, and which one has precedence over the other. Can any of them be deleted safely?

Thanks in advance.

(the same happens partially with some files at /RMP and /TERRAIN folders; and of course for TFTD similar folders)

[Meridian]

Files in the UFO folder are the original (usually unpatched) files from the 1994 game (usually copied from Steam or GOG installation).

Files in the xcom1 folder are the patched files from the universal data patch. See OXC announcement from July 2024: https://openxcom.org/2024/07/nighty-builds-fixed/

1/ Why: to make life easier for players
2/ Which takes precedence: the files in the xcom1 folder
3/ Can they be deleted: technically yes, but I don't see a reason why