Jake if you're talking about some AI aircraft, it seems to be related to how they are compiled with XML visibility/animations. For some reason, ACM can't figure out which parts it should display and which ones it shouldn't
I've had that problem with the Andras Neumann Piper models but there is something you can edit in,I think the model file. Don't ask me what though as I can't remember. Sorry
OK, thanks guys. Yes it is an AI model that I am creating. I've seen this before and never figured it out. There are XML animations that call for parts to disappear at a certain time so I guess that's it. I can see enough to set the contact points but I'll have to do the lights by trial and error.
Try taking a copy of your model, strip all the animations out of it and compile it without XML or animations. That should give you a base 3D model to work off on in ACM.