Just to let you know , i copy .rlv, .tga and .lvl of New Tartarus arena and it worked
Plus since i was "updating" vanilla game map i also did with Rhodes final city ( was missing the boat To acess Atlantis act) it worked as well. Also the 1st Cave after Helos ( when you save Telis from satyrs) was missing the Gravestone memo.
The strange thing is i didnt used the Force save option in the editor, i just copy the .rlv/tga and lvl to my mod map, open the editor and the changes already were there, i only rebuild and change the map/path of new areas, Built in the artmanger and it shows okay ingame
Edit : its bit off topic, is there any more changes in any previous maps with ATlantis ? The closed shortcut in Athenian Batleground already is there