i’m not aware there is a problem in max_Zbrush pipeline …nor the need for a special exporter
if you have some trouble , just give some pictures and i may be able to help …
the thing you should know is if you exported from Zbrush to max and you cut , inset , extrude … anything that will change the Number"total No." or the order"No. of each vert." of vertices … then you Will Lose the Model Divisions in Zbrush … and Zbrush will recognize this as a New Model ! …this is how it works !
SO , this should be clear … What you can Do in max With Zbrush model Lv1 is only Move, Scale , Rotate …verts -edges - polys …
OR … fixing The Uv Layout
and Whatever ,except >>>changing the No. or the Order of the Verts …
now regarding your described Problem …
there is a difference between an Obj and Ztl …
So , try this
1-load your Tool “ztl” in Zbrush and it should have Some Levels of Divisions
2-go Down to Level one and export As obj --> leave Zbrush opened and on the same level
3-import in max , move some verts or change the obj shape without Cutting or adding
4-in max , export Selected " not just export , this option exports the whole scene "
5- in Zbrush , while you are having the Same tool and At Lv1 choose import and import
the obj you Exported from max , now you can go up in Divisions !
and this is the way it works , and by this way you can change the Uv layout from those you have to those you adjusted
this has been there from version 2 , now with V3 … if you have SubTools , you may have some issues regarding the Size of the tools and its Sub-tools
i think its now Clear that Obj can’t Hold Levels Of divisions , this is only a Property of the
this is as far as i understand from your post , if you mean something else … please make it clear