Many thanks for replying Spyndel.
I have used the project all route before so maybe that’s the way to go.
I’m not that efficient in ZBrush just now, so I like to create a simple ‘blank’ of my character in my 3D app and then work the detail into it in ZBrush.
One thing I haven’t played with much is to add all the detail, then Z remesh and export that object out to use with my newly created disp or normal maps (instead of using the the original imported geometry at all)
My thinking is that the remeshing process takes into account the new detail added in Zbrush and remeshes the object with the modified topology.