[Solved] Unity has 1062 vertices and over 5000 triangles when 3dsMax only shows 959 vertices.

I've done some searching, and found this:
http://answers.unity3d.com/questions/8969/why-is-there-such-a-huge-disparity-in-polycount-be.html
I'm doing a cloth simulation, and this bothers me.
I have duplicated vertices and indices, which leads to Contraints failure. There are no constraint for my cloth where the seam happens!
Original Model in 3dsMax.
Here I just simply log the vertexCount and triangles.Length.
And this is what I got in Unity:


Is there a way to avoid the seams, and get the non-duplicated triangles?

 

Has any one ever come across with this problem?

 

[Solved]: I have solved this by looping through vertices and find a duplication at certain position, and map the new index to the existing one. This problem is caused by different uv property at the same vertex.