I have an issue after editing a character in ZBrush and clicking GoZ button to update the character in CC3:
The actual character is not updated in CC3 but there is a white mesh created on top of the character (kind of duplicate).

The reason seems to be that I do not have 'Update' option available in the CC3 GoZ Option screen. Only 'Create Acc' and 'Create Cloth'.

How to fix this?

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liebe Grüße vidi

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Thank you for your comment. This must be very newbie question but I am wondering how do I manage that... I have tried to follow tutorials found e.g. in Youtube with no success.

I encounter similar issue even not retouching the character in ZBrush at all or by making very minor changes. 

What do I do wrong or do I need to do something extra to manage vertex order and mesh count?

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liebe Grüße vidi

meet us here

I got it working properly! 
It works for me only if I do NOT split any body parts (keep the checkboxes unchecked) in CC3's GoZ Settings. Now I have the 'Update' option only when importing character back to CC3.

This is a bit strange because this was illustrated differently in the tutorial by Realillusion: https://www.youtube.com/watch?v=pKmEMF_TTdw&t=71s (6:30).

I know this post is old but this "not splitting the mesh" strategy helped me solve this problem. Thanks !