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GoZ Question with Max2011

I have a question regarding GoZ and Max 2011. I made a model in Zbrush originally using Zspheres and using GoZ exported to Max with no problem. After doing some topology work on the mesh in Max I try to go back into Zbrush using GoZ and something strange happens. First, it doesnt just update the subtool in Zbrush with the mesh I had in Max, it replaces the whole document with just that tool. Also, it seems to bring in another mirrored half on the mesh from Max.

I hope that made sense and hopefully somebody can help.

Thank You,