Andres, man, I hate to bother you yet again, but I'm still having trouble with missing objects. Crates, triggers, magnets.... In one level, the hanger itself wouldn't show up. If it's a moveable object and you walk into it, it'll flicker into visibility and remain so, but trigs and mags are another story. Most notable in the level I'm fartin' around with now is that the doors on the plex elevator don't close if I partition save. (I'm assuming that the trigger isn't there) Without the save, everything works fine.
Any ideas off the top of your head? I could upload the level, but I figure you don't really want to download an 8mb file.
