How to transfer detail from high poly to low poly and keep the UVs?



I am trying to work out an efficient workflow for games. I am mainly using ZBrush.

So, I know how to retopo in ZBrush and create UVs for a low poly model. What I don’t get is when I project detail from high poly model onto a low poly one and I use the project all- divide- project all- divide technique, doesn’t the dividing turn that low poly model into a high one? Does the process of baking somehow ix that?

I don’t want to just transfer a high res texture onto a low poly model, because there is always some work to be done in the UV master. The unwrapping of that texture won’t align with the UV’s I’ve created by hand for the low poly model.

Please help if you know how to solve this in ZBrush. Many thanks.