A bit confused on the process. Should I cut the low poly in half and unwrap only one half. Then apply a mirror modifier after I bake the normal map. I saw that the high poly was cut in half and mirrored, while the low poly was just one solid piece.
If it's symmetrical, go for it! The only time you wouldn't want to do this is if you want the rest of the textures to be different on each side.
