Our studio recently upgraded from version 6 to 7 and I'm not sure why, but only half of my forest objects (9 of 21) load when opening a scene. If I import merge into a fresh Max I can see the forests are all listed in the dialogue window and I can select and import, but once they're loaded they are again absent.
I've been working on this scene for a couple of weeks and updated 5 days ago which is when I first noticed some issues when copying forests into a new scene. I've also checked an unrelated scene to see whether merging in forests would work and it was also missing a few. Also worth noting that several other computers in the studio also cannot load the scene with all 21 forests.
I can send a link to the scene if needed to solve the issue as this is pretty important for our projects