Hi Isaac, Animation for props is exported with the prop/model when you save to iClone.
If you are talking about character animation from 3dMax, I am not aware that it can be done.(might be wrong, tho)
I have pasted my answer from another query re Maya, but I think it maybe relevant to you too.
Lisa s
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You do not need the iclone-characters for motion editing, just any basic skeleton rigg with around 26 bones.
iclone imports BHV motion files to convert to the VNS files.
I do not know if maya exports BVH or not.
I use the motion editor in iClone studio 90% of the time, there is a good tutorial about the motion editor on youTube.
For the other editing I use Poser7 (mainly because I already have it). I use the poser native "stickman", Keyframe the animation and then export as BVH.
you can use the BVH motion converter in iClone but you will need to make a prt file (bone ofsets) for the stikman (or what ever skeleton you use), but that is a once off thing to do. Tutorial for this is in the CCD files.
Good luck!