Again, i don't see that the "krayt cave" is something different than the known Sand Demon's cave of the Sith Warriors questline. And since it refers specifically to an "imperial" cave, it can be assumed that it can only be accessed by (certain) imperials, a sith warrior in its storyline for example (e.g. Demon's blood).
Maybe there's another "Krayt Cave"-map, that looks like the map in the Jedi Knight's quest, where he faces the Sand Demon.
Incorrect assumption. The other "imp" files in proximity to the krayt_cave file are all accessible by BOTH factions and seem to be near mos ila.