When you export the model to 3ds max, you can move them individually by poly modelling (converting the model to editable poly), if I got the question right. Besides you can check this discussion ; http://community.wolfram.com/groups/-/m/t/387917?p_p_auth=qejIXOl2

It's quite easy. Here is a 3D structure:

graphics = Graphics3D[{
   Cuboid[],
   Cone[{{.5, .5, 1}, {.5, .5, 1.5}}, .5],
   Sphere[{.5, .5, 1.75}, .25]
   }, Boxed -> False]

This exports the structure in 3DS format:

Export["geometry.3ds", graphics]

You can also specify the format explicitly if it isn't clear from the file name:

Export["geometry.3ds", graphics, "3DS"]

This will then open the file with the default application on your system for 3DS files (% denotes the last output):

SystemOpen[%]

Chris