my problem is more an handling problem with 3ds max. but it's essiental in the workflow:
 
how can I align my allready existing geometry to the tracked point cloud. E.g. I have the point cloud from MM in 3ds max imported. This cloud contains the corner points of an existing building. Now I want to align a further floor. The floor is allready modeled. The existing building is also under the new floor modeled. So I have to match/ align the modeled existing part to the in MM generated corner points.
 
Is this with object snaping exactly possible or do I have to work approximately?