Just tested it out and it behaves exactly the same. And even if it would fix the shading problem, it creates another one- messy topology which is nearly impossible to alter hassle free.
I really want this workflow to work (Create model in MoI > Export to Max > Modify geo in Max if needed). But I just can't get it to work without totally destroying shading of an object.
As it stands now, everytime I want to modify the original geo I pretty much have to re-create the model in MoI and re-export it and then re-apply all the materials/re-name all the objects/re-set mat id's etc. which is not time efficient at all.