I am trying to make a modular floors and walls, so I got one box primitive (200cmx200cmx19cm) and I unwrapped it with second channel that have the uv islands aligned to the grid with grid size 0.015625 aka 1/64 = 0.015625 (64 is the planned lightmap resolution). Everything looks perfect in 3ds max, but when I import the box in UE4, choose the second channel, bake the light, turn on the lightmap density and then I see that the UVs aren’t aligned. What am I doing wrong? If you guys have some suggestions please post them in the thread. Thanks in advance.
Here are some screenshots: