You cannot get that away (in case you want the
map be still playable in ofp).
If not, just rename the file to how you like it but:
!!!!!! warning - your mission will then nomore work in ofp !!!!!!
Anyway, i believe it's time for you to touch your first
basic ofp-editing tutorials (can be found in the editors depot
on top of every page at ofpec), then you may understand
where that funky .eden comes from.
~S~ CD