3d model in Autocad

Here is the linked cad file to 3dsmax

Here is the 3d model with assigned materials

*If there are some revisions or changes just go to Autocad & modify. *if the objects are in same materials in max. just make it similar layers in cad, you can create new layers also . *Save yor work & dont change the file name

Then go to Max file & Reload what you had modify or change in Autocad

Note: *its very difficult to modify the 3d in 3dsmax. If theres a revision in your design just go back to Autocad & modify. *if you want your 3d model to be edited in 3dsmax you BIND first. You can see beside RELOAD button. But once you BIND , there is no more linking or connection between your cad file & 3dsmax.